Given a phrase describing the relationship between two words, extract the words and the lexical relationship between them. The relation has to be of the type 'MemberOf', 'MadeOf', 'Synonym', 'Entails', 'HasA', 'HasProperty', 'PartOf', 'Antonym' or 'IsA'. The output should have the format: word1 relation word2.

bird can have or can contain feather
bird HasA feather

cavity is part of body
cavity PartOf body

free can be used as the opposite of prison

free Antonym prison