Given the input sentence, please extract the subject and object containing a certain relation in the sentence according to the following relation types, in the format of "relation1: word1, word2; relation2: word3, word4". Relations include: 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.

An NBER working paper from 2013 by Liran Einav, Chiara Farronato and Jonathan Levin of Stanford University and Neel Sundaresan of eBay Research Labs tries to work out why auctions have fallen out of favour.

Answer: employer: Jonathan Levin, Stanford University