What is the relationship between Sarah Feinberg and administrator in the context of the input sentence. Choose an answer from: 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.

"For drivers and passengers who are driving an unfamiliar route, travelling at night, or who lose situational awareness at any given moment, receiving an additional alert about an upcoming crossing could save lives," acting administrator Sarah Feinberg wrote.

Answer: position_held