Sentence:The [e1]essays[/e1] collected in this [e2]book[/e2] are based on the reports presented to the Symposium "the European Union as an Actor in International Relations", jointly organised by the two historical Universities of Macerata and Camerino, held on 5-7 April 2001.
 e1: essays. 
 e2 : book.
Answer: Member-Collection(e1,e2)