What is the relationship between CGG and PARIS 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.

PARIS Aug 5 A subcontractor working for French seismic survey group CGG has been kidnapped in Cairo and is held by Islamic State, the company said on Wednesday.

Answer: headquarters_location