What is the relationship between Morgan Stanley and New York City 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.

Before Bill begins, I would like to let you know that we will be participating in the annual Morgan Stanley Healthcare Conference in New York the week of September 14 and that we plan to host an Investor and Analyst Day in New York City on September 28.

Answer: headquarters_location