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.

class can be used as the opposite of recess
class Antonym recess

recognize is true then also know is true
recognize Entails know

key is part of keyboard

key PartOf keyboard