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<?xml version="1.0" encoding="UTF-8"?>
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<xsd:schema
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targetNamespace="http://www.opengis.net/ogc"
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xmlns:xsd="http://www.w3.org/2001/XMLSchema"
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xmlns:ogc="http://www.opengis.net/ogc"
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elementFormDefault="qualified">
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<xsd:complexType name="Arithmetic_OperatorsType">
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<xsd:choice maxOccurs="unbounded">
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<xsd:element ref="ogc:Simple_Arithmetic"/>
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<xsd:element name="Functions" type="ogc:FunctionsType"/>
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</xsd:choice>
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</xsd:complexType>
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<xsd:element name="BBOX">
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<xsd:complexType/>
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</xsd:element>
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<xsd:element name="Between">
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<xsd:complexType/>
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</xsd:element>
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<xsd:element name="Beyond">
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<xsd:complexType/>
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</xsd:element>
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<xsd:complexType name="Comparison_OperatorsType">
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<xsd:choice maxOccurs="unbounded">
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<xsd:element ref="ogc:Simple_Comparisons"/>
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<xsd:element ref="ogc:Like"/>
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<xsd:element ref="ogc:Between"/>
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<xsd:element ref="ogc:NullCheck"/>
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</xsd:choice>
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</xsd:complexType>
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<xsd:element name="Contains">
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<xsd:complexType/>
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</xsd:element>
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<xsd:element name="Crosses">
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<xsd:complexType/>
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</xsd:element>
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<xsd:element name="Disjoint">
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<xsd:complexType/>
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</xsd:element>
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<xsd:element name="DWithin">
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<xsd:complexType/>
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</xsd:element>
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<xsd:element name="Equals">
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<xsd:complexType/>
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</xsd:element>
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<xsd:element name="Filter_Capabilities">
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<xsd:complexType>
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<xsd:sequence>
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<xsd:element name="Spatial_Capabilities"
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type="ogc:Spatial_CapabilitiesType"/>
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<xsd:element name="Scalar_Capabilities"
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type="ogc:Scalar_CapabilitiesType"/>
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</xsd:sequence>
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</xsd:complexType>
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</xsd:element>
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<xsd:complexType name="Function_NameType">
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<xsd:simpleContent>
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<xsd:extension base="xsd:string">
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<xsd:attribute name="nArgs" type="xsd:string" use="required"/>
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</xsd:extension>
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</xsd:simpleContent>
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</xsd:complexType>
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<xsd:complexType name="Function_NamesType">
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<xsd:sequence maxOccurs="unbounded">
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<xsd:element name="Function_Name" type="ogc:Function_NameType"/>
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</xsd:sequence>
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</xsd:complexType>
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<xsd:complexType name="FunctionsType">
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<xsd:sequence>
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<xsd:element name="Function_Names" type="ogc:Function_NamesType"/>
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</xsd:sequence>
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</xsd:complexType>
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<xsd:element name="Intersect">
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<xsd:complexType/>
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</xsd:element>
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<xsd:element name="Like">
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<xsd:complexType/>
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</xsd:element>
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<xsd:element name="Logical_Operators">
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<xsd:complexType/>
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</xsd:element>
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<xsd:element name="NullCheck">
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<xsd:complexType/>
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</xsd:element>
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<xsd:element name="Overlaps">
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<xsd:complexType/>
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</xsd:element>
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<xsd:complexType name="Scalar_CapabilitiesType">
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<xsd:choice maxOccurs="unbounded">
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<xsd:element ref="ogc:Logical_Operators"/>
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<xsd:element name="Comparison_Operators"
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type="ogc:Comparison_OperatorsType"/>
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<xsd:element name="Arithmetic_Operators"
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type="ogc:Arithmetic_OperatorsType"/>
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</xsd:choice>
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</xsd:complexType>
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<xsd:element name="Simple_Arithmetic">
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<xsd:complexType/>
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</xsd:element>
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<xsd:element name="Simple_Comparisons">
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<xsd:complexType/>
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</xsd:element>
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<xsd:complexType name="Spatial_CapabilitiesType">
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<xsd:sequence>
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<xsd:element name="Spatial_Operators"
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type="ogc:Spatial_OperatorsType"/>
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</xsd:sequence>
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</xsd:complexType>
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<xsd:complexType name="Spatial_OperatorsType">
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<xsd:choice maxOccurs="unbounded">
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<xsd:element ref="ogc:BBOX"/>
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<xsd:element ref="ogc:Equals"/>
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<xsd:element ref="ogc:Disjoint"/>
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<xsd:element ref="ogc:Intersect"/>
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<xsd:element ref="ogc:Touches"/>
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<xsd:element ref="ogc:Crosses"/>
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<xsd:element ref="ogc:Within"/>
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<xsd:element ref="ogc:Contains"/>
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<xsd:element ref="ogc:Overlaps"/>
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<xsd:element ref="ogc:Beyond"/>
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<xsd:element ref="ogc:DWithin"/>
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</xsd:choice>
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</xsd:complexType>
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<xsd:element name="Touches">
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<xsd:complexType/>
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</xsd:element>
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<xsd:element name="Within">
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<xsd:complexType/>
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</xsd:element>
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</xsd:schema>
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