<xsd:enumeration value="string"/>
<xsd:enumeration value="boolean"/>
<xsd:enumeration value="float"/>
<xsd:enumeration value="double"/>
<xsd:enumeration value="duration"/>
<xsd:enumeration value="dateTime"/>
<xsd:enumeration value="time"/>
<xsd:enumeration value="date"/>
<xsd:enumeration value="gYearMonth"/>
<xsd:enumeration value="gYear"/>
<xsd:enumeration value="gMonthDay"/>
<xsd:enumeration value="gDay"/>
<xsd:enumeration value="gMonth"/>
<xsd:enumeration value="base64Binary"/>
<xsd:enumeration value="anyURI"/>
-<xsd:enumeration value="unknown">
<xsd:documentation>The value is not known. This value should not be used
in normal situations. All reasonable attempts should be made to determine
the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
</xsd:annotation>
</xsd:enumeration>
</xsd:restriction>