Sentence:His work presented a new, spontaneous, unpolished style, which appealed to a [e1]subculture[/e1] of [e2]folksingers[/e2], hipsters, mystics, and writers of 50s Cold War America where conformity and witchhunts sought to impose straitjacket freedom.
 e1: subculture. 
 e2 : folksingers.
Answer: Member-Collection(e2,e1)