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: roof is part of construction

SOLUTION: roof PartOf construction

PROBLEM: depression is a kind of mood

SOLUTION: depression IsA mood

PROBLEM: cloud is part of sky

SOLUTION:
cloud PartOf sky