In Rule Category

Connects a kinship system to the descent, marriage or residence rule category that classifies it, such as patrilineal descent, exogamy or matrilocal residence. The inverse reading, Rule Category Of, names the same relationship from the category toward each kinship system classified under it. This relation type gives the descent-rule-category classification already recorded as an enum fact on each kinship system a durable, comparable entity identity; it does not replace that enum fact, which keeps classifying every entity exactly as before.