Task: Question Answering
Input (English): Context: OK , Christine and I are still days behind in our Olympics coverage so this might be old news by now , but according to the fetching young lad on NBC , I think his name is Mary Carillo , panda experts in China actually show male pandas " panda porn " to get them in the mood ! Crazy , huh ? And just in case we doubted the veracity of these reports , NBC actually showed us footage of a horny panda pacing back and forth in his cage while some juicy " panda porn " played on a TV nearby . Hilarious !. 
Question: What causes the zoo to show this ' panda porn ' to the pandas ?
Output (English): They are trying to encourage them to mate with other pandas.