Original sentence: Later, Univision planned to purchase KUTF to make it a duopoly with KUTH, but cancelled its plans shortly after Newport Television announced the sale of its Salt Lake City duopoly to High Plains Broadcasting (by that time, private-equity firm Providence Equity Partners owned sizable stakes in both Univision and Newport Television)
Edited sentence: Later, Univision planned to purchase KUTF to create a duopoly with KUTH, but cancelled its plans shortly after Newport Television announced the sale of its Salt Lake City duopoly to High Plains Broadcasting (by that time, private-equity firm Providence Equity Partners owned sizable stakes in both Univision and Newport Television)