What is the relationship between Batman and Justice League in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

Some of his most noteworthy projects include “Good Will Hunting,” “Pearl Harbor,” “The Town,” “Argo,” “Gone Baby Gone” and “Gone Girl.” Affleck is also slated to take on the role of Batman in the four upcoming films, “Batman v. Superman: Dawn of Justice,” “Suicide Squad,” “The Justice League Part One” and “The Justice League Part Two.” Jennifer Garner Net Worth: $60 Million

Answer: member_of