I want to know the answer to the following question:
Who did Barcelona beat to win the 2015 UEFA Super Cup?
All the background I'm provided with is that "They ended the year with a 3–0 win over Argentine club River Plate in the 2015 FIFA Club World Cup Final on 20 December to win the trophy for a record third time, with Suárez, Messi and Iniesta the top three players of the tournament.". Is that enough to answer the question?
Answer: no