original question: which boxing weight division does match to [Manny Pacquiao vs. Brandon Rios]?
answer: welterweight
answer type: Boxing Weight Division.
auxiliary information: Manny Pacquiao vs. Brandon R√≠os is a boxing welterweight championship fight for the vacant WBO International Welterweight championship. The bout was held on 24 November 2013 at the Venetian Macau resort & hotel in Macau. Pacquiao won via unanimous decision and took the vacant WBO International Welterweight title. Pacquiao said that the fight would be dedicated to the victims of the recent typhoon hit in the Philippines. The fight drew 475,000 ppv buys.
Name the bosing weight division which matches to [Manny Pacquiao vs. Brandon Rios].