Relationship Of Resource Recommended best practice is to use a controlled vocabulary. The relationship of the subject (identified by resourceID) to the object (identified by relatedResourceID). `sameAs`, `duplicate of`, `mother of`, `offspring of`, `sibling of`, `parasite of`, `host of`, `valid synonym of`, `located within`, `pollinator of members of taxon`, `pollinated specific plant`, `pollinated by members of taxon` http://rs.tdwg.org/dwc/terms/ Resource Relationship Resource Relationship