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.

NEW YORK, Sept. 30, 2015 /PRNewswire/ -- Harwood Feffer LLP ( www.hfesq.com ) is investigating potential claims against the board of directors of Rentrak Corporation ("Rentrak" or the "Company") ( RENT ) concerning the proposed acquisition of the Company by ComScore Inc. ("ComScore").

Answer: owner_of: ComScore, Rentrak