What is the relationship between lead and Japan 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.

During her tenure at Sitix, she spent ten crucial weeks in Japan where she wrote the Standard Operating Procedures for the company’s equipment as well as interviewed, coached and lead coworkers.

Answer: location_of_formation