Freebase has mutexes that store incompatible type information. For instance, in Wikidata I noticed on the U2 band topic, that they have statements of:
P17 Country - sovereign state of this item. P740 Location of formation - location where a group or organization was formed. In Freebase we have basically that P740, "Place where musical career began".but not a Country property with that sort of definition. But having "sovereign state of this item" on an instance of band, seems weird, and perhaps should not be allowed , or incompatible. Unless the P17 Country property had an expanded definition of "sovereign state (or originating sovereign state) of this item" 1. How does Wikidata want to handle Property / Statement rule enforcement and Freebase's incompatible types ? 2. How does Wikidata want to handle locking down Property descriptions (Freebase uses Permissions and Owners), where the complete meaning of something being changed might cause severe wrongful polluted data ? Thad +ThadGuidry <https://www.google.com/+ThadGuidry>
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