Refer to the input text as context and select the correct relationship between 'Sheryl Sandberg' and 'Chief Operating Officer' from the available options.
Options: employer, operator, position held, industry

SAN FRANCISCO, July 6 (Reuters) - Facebook Inc's Chief Operating Officer Sheryl Sandberg is taking a seat on the board of SurveyMonkey, the online polling company that was run by her late husband, Dave Goldberg.
position held