San Francisco-based Fundbox, which launched in 2012 to offer working capital to business with unpaid invoices, just announced that it added Amazon CEO Jeff Bezos and early Twitter-investor Spark Capital to an investor lineup that includes Khosla Ventures and Blumberg Capital.
Utilize the input text as a context reference, choose the right relationship between 'Jeff Bezos' and 'Amazon' from the options.
Options: stock exchange, original broadcaster, owner of, distributed by