What is the relationship between IP Group and London 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.

0800: Company results from the FTSE 100 this morning include Legal & General (LSE: LGEN.L - news ) , London Stock Exchange (Other OTC: LDNXF - news ) and IP Group (LSE: IPO.L - news ) .

Answer: headquarters_location