Utilize the input text as a context reference, choose the right relationship between Goldman Sachs and Lloyd Blankfein 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.

Sept 22 Goldman Sachs Group Inc Chief Executive Lloyd Blankfein said he had a "highly curable" form of lymphoma, but would be able to work substantially as normal during treatment.

Answer: chief_executive_officer