What is the relationship between George Osborne and Chancellor of the Exchequer 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.

Britain's Chancellor of the Exchequer George Osborne is on Thursday to open bidding for £11.8 billion ($18 billion, 16.3 billion euros) in contracts to build a high-speed rail link in England.

Answer: position_held