	<xs:simpleType name="NilReasonEnumeration">
		<xs:union>
			<xs:simpleType>
				<xs:restriction base="string">
					<xs:enumeration value="inapplicable"/>
					<xs:enumeration value="missing"/>
					<xs:enumeration value="template"/>
					<xs:enumeration value="unknown"/>
					<xs:enumeration value="withheld"/>
				</xs:restriction>
			</xs:simpleType>
			<xs:simpleType>
				<xs:restriction base="string">
					<xs:pattern value="other:\w{2,}"/>
				</xs:restriction>
			</xs:simpleType>
		</xs:union>
	</xs:simpleType>
