<xs:attributeGroup name="GenderGroup">
<xs:annotation>
<xs:documentation xml:lang="en">Used to indicate the gender of a person, if known.</xs:documentation>
</xs:annotation>
<xs:attribute name="Gender" use="optional">
<xs:annotation>
<xs:documentation xml:lang="en">Identifies the gender.</xs:documentation>
</xs:annotation>
<xs:simpleType>
<xs:restriction base="xs:NMTOKEN">
<xs:enumeration value="Male" />
<xs:enumeration value="Female" />
<xs:enumeration value="Unknown" />
</xs:restriction>
</xs:simpleType>
</xs:attribute>
</xs:attributeGroup>
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