Sentence:In these woods they had an [e1]aerie[/e1] of [e2]sparrow-hawks[/e2] and merlins, and the right to bees, honey and millstones and turf, bracken and heather for themselves and their tenants.
 e1: aerie. 
 e2 : sparrow-hawks.
Answer: Member-Collection(e2,e1)