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.

head can be used with the same meaning of think
head Synonym think

keep is part of castle
keep PartOf castle

love can be used with the same meaning of lover

love Synonym lover