Item:Q4178: Difference between revisions
Created a new Item: chemical entity class, chemical entity as a first-order metaclass. To be used as P31 values for all chemical entity classes. Its instances are classes (e.g. (RS)-methadone, gold, or ethanol) |
Created claim: instance of (P2): second-order class (Q23) |
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Property / instance of | |||
Property / instance of: second-order class / rank | |||
Normal rank |