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: library is a kind of collection

SOLUTION: library IsA collection

PROBLEM: elephant can have or can contain trunk

SOLUTION: elephant HasA trunk

PROBLEM: answer can be used as the opposite of unknown

SOLUTION:
answer Antonym unknown