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.

* New Rolls-Royce boss Warren East faces £2bn headache in first week Meanwhile, Land Securities (LSE: LAND.L - news ) made strides on Tuesday - up 20p, or 1.6pc, to £12.50 after UBS (NYSEArca: FBGX - news ) lifted its rating to 'buy’ from 'neutral’, believing the stock is trading at a discount.
employer