Wife is related to Mother. Mother is related to Sister. Sister is related to Relation. Relation is a synonym of Account. 
Rib is related to Protect. Brother can Protect. 
Wife <--RelatedTo--> Mother <--RelatedTo--> Sister <--RelatedTo--> Relation <--Synonym--> Account 
Rib <--RelatedTo--> Protect <--CapableOf-- Brother 