You will be given a definition of a task first, then some input of the task.
In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it. Your job is to determine which sentence(s) from the passage can be used to search for further information needed to answer the question.

Question: Who was the Gold Medal recipient at the Olympics where del Potro received the Bronze medal? Passage:Juan Martín del Potro reached the quarter-finals of the first slam of the year in the Australian Open losing to Roger Federer. He then reached his first final of the year at the ABN AMRO World Tennis Tournament losing to Federer once again. However, he bounced back by winning his first title of the year at the Open 13 defeating Michaël Llodra in the final. At the Estoril Open, successfully defended his title by defeating Richard Gasquet . At the French Open he reached the quarter-finals but fell to Federer for the fifth time in the year despite leading two sets to love he lost. At Wimbledon he was handily defeated by David Ferrer in the fourth round. He bounced back at the Olympics winning the Bronze Medal match over Novak Djokovic after losing to Federer in the semifinals. At the US Open he reached his third slam quarter-finals of the year but lost once again this time to Djokovic. He won his third title of the year at the Erste Bank Open defeating qualifier Grega Žemlja in the final. At the Swiss Indoors Basel, Del Potro got his fourth championship of the year after beating Roger Federer. This is the third time del Potro has qualified for the event.

Output:
He bounced back at the Olympics winning the Bronze Medal match over Novak Djokovic after losing to Federer in the semifinals