<?xml version="1.0" encoding="utf-16"?>
<xs:simpleType name="NaturalLanguageWKV">
    <xs:restriction base="xs:NMTOKEN">
        <xs:maxLength value="63" />
        <xs:enumeration value="ar" />
        <xs:enumeration value="de" />
        <xs:enumeration value="en" />
        <xs:enumeration value="en-us" />
        <xs:enumeration value="es" />
        <xs:enumeration value="fr" />
        <xs:enumeration value="hi" />
        <xs:enumeration value="it" />
        <xs:enumeration value="ja" />
        <xs:enumeration value="pt" />
        <xs:enumeration value="zh" />
    </xs:restriction>
</xs:simpleType>