What is the relationship between al Qaeda and Osama bin Laden 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.

DUBAI, Aug 1 (Reuters) - A sister of former al Qaeda leader Osama bin Laden was killed along with her husband and mother when a private jet crashed in southern England on Friday, Saudi-owned al-Arabiya television reported on Saturday.

Answer: chairperson