Utilize the input text as a context reference, choose the right relationship between Cantor Fitzgerald and Howard Lutnick from the options. Options: 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.

Cantor Fitzgerald CEO Howard Lutnick said the most important thing to him on each Sept. 11 is very simple.

Answer: chief_executive_officer