<?xml version='1.0' encoding='utf-8'?>

<xs:schema
  	elementFormDefault="qualified"
  	attributeFormDefault="unqualified"
  	xmlns:xs="http://www.w3.org/2001/XMLSchema"
  	>

  <xs:simpleType name="coverage_temporal_Enum">
    <xs:union>
      <xs:simpleType>
        <xs:restriction base="xs:normalizedString">
          <xs:whiteSpace value='collapse'/>
           <xs:enumeration value='1400s-1699'/>
           <xs:enumeration value='1700-1799'/>
           <xs:enumeration value='1800-1849'/>
           <xs:enumeration value='1850-1899'/>
           <xs:enumeration value='1900-1929'/>
           <xs:enumeration value='1930-1949'/>
           <xs:enumeration value='1950-1969'/>
           <xs:enumeration value='1970-1999'/>
           <xs:enumeration value='2000 to present'/>
           <xs:enumeration value='Pre-1400'/>
      	</xs:restriction>
      </xs:simpleType>
    </xs:union>
  </xs:simpleType>
</xs:schema>