Utilize the input text as a context reference, choose the right relationship between Neighborly and San Francisco 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.

Based in San Francisco and counting Ashton Kutcher among its list of investors, Neighborly is creating a platform to allow its users to invest in municipal projects they care about.

Answer: headquarters_location