What is the relationship between Vodafone 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.

LONDON (ShareCast) - (ShareCast News) - A spike in ITV (LSE: ITV.L - news ) shares late in the trading session appeared to have been provoked by reports that Liberty Global (NasdaqGS: LBTYA - news ) 's billionaire chief John Mallone might be more minded to pursue the acquisition of small mobile networks now that a tie-up with Vodafone was off the table.

Answer: headquarters_location