Utilize the input text as a context reference, choose the right relationship between 'ZocDoc' and 'company' from the options.
Options: product/material produced, legal form, subsidiary, location of formation

The only two New York City startups more valuable than ZocDoc are Blue Apron, a $2 billion food delivery startup, and WeWork, a $10 billion company that rents out office space, according to Dow Jones VentureWire .
legal form