instruction:
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.
question:
Iron is a kind of gray
answer:
iron IsA gray


question:
screen can be used with the same meaning of pick
answer:
screen Synonym pick


question:
buy can be used as the opposite of sell
answer:

buy Antonym sell