Utilize the input text as a context reference, choose the right relationship between 'Porter Novelli' and 'public relations' from the options.
Options: business division, currency, platform, industry

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.
industry