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.

sound is a kind of wave
sound IsA wave

decide can be used as the opposite of know
decide Antonym know

road can be used as the opposite of sidewalk

road Antonym sidewalk