A compound value type (CVT) is an element that ties together properties from several types. Typically (and trickily) a compound value type doesn't have a display name because it is only a container object for a group of properties. For example, the CVT Musical Group Membership contains the name of a band, the name of the musician, and the role or instrument played. This data will appear on the related topic instances of Musical Artist even though the properties exist within the compound value type. This is because Musical Group Membership is a CVT and is the expected type for a property (Members) on Musical Artist.
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Freebase Terms
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