What is the relationship between Warren East and Rolls-Royce 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.

Rolls-Royce Holdings Plc cut its full-year profit guidance and halted a share buyback to preserve cash, days after new Chief Executive Officer Warren East took over at the U.K. manufacturer of aircraft engines and marine products.

Answer: employer