What is the relationship between BG Group and natural gas 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.

CAIRO, July 26 (Reuters) - BG Egypt, a subsidiary of BG Group and one of Egypt's largest natural gas producers, has appointed Khaled Kacem as its president, the company said in a statement on Sunday.

Answer: product_or_material_produced