TASK DEFINITION: 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.
PROBLEM: robot is a kind of worker

SOLUTION: robot IsA worker

PROBLEM: melt can be used as the opposite of solid

SOLUTION: melt Antonym solid

PROBLEM: purpose can be used with the same meaning of reason

SOLUTION:
purpose Synonym reason