What is the relationship between Porter Novelli and public relations 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.

NEW YORK, Aug. 20, 2015 /PRNewswire/ -- Global public relations leader Porter Novelli (PN) announced that Catherine Fink has joined its New York office as executive vice president, health and wellness.

Answer: industry