What is the relationship between Whopper and Burger King 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.

The proposed mashup of the Big Mac and Whopper would include elements of each, such as flame-broiled beef patty and a middle bun, according to a website Burger King set up.

Answer: manufacturer