Sentence:The story of the epic struggle between the Islamic Empire of the Ottomans and the Christian Kingdoms of Eastern Europe is told from the perspective of a secret fraternity, the Excubitors, a [e1]brotherhood[/e1] of [e2]counselors[/e2] to kings, sultans, head of churches, knights, scholars, financiers, and merchant adventurers who hold influential positions on both sides of the conflict.
 e1: brotherhood. 
 e2 : counselors.
Answer: Member-Collection(e2,e1)