_:vb6782452 "Dogs are animals."@en . "2.3" . _:vb6782451 "A dog is an animal."@en . _:vb6782452 . _:vb6782449 . _:vb6782450 . _:vb6782451 . _:vb6782450 "Rex is a dog."@en . _:vb6782449 "Used to indicate that the subject is an instance of the predicate nominal."@en . .