http://docs.oasis-open.org/wsdm/2004/12/muws/wsdm-muws-part2.xsd
complexType CategoryType

{http://www.w3.org/2001/XMLSchema}anyType
    {http://docs.oasis-open.org/wsdm/2004/12/muws/wsdm-muws-part2.xsd}CategoryType

Model

<...>
(any element from any namespace)?
</...>

Prohibited substitutions (block)

allowed to substitute with an xsi:type attribute with any derived type

Content Type

element-only content, not nillable.
This type can be derived by extension or restriction.

Derived types

RelationshipTypeType, SituationCategoryType, StateType