Task: Question Answering
Input (English): Passage: One day I was working in my kitchen . I was making cookies . Suddenly I heard the piano in the livingroom . I could hear the the notes plinking . I walked out to the livingroom and looked at the piano . While i was watching it , I could see the piano keys being pressed down . What I could not see is who or what was pressing the piano keys down . The notes did not play a tune at all . It was all just a bunch of crazy notes , there was no song at all . I walked towards the piano while it played a crazy tune no one could recognize . I reached to lift the back cover and look into the piano . As I lifted the lid , I could see , looking back at me ; was a tiny pair of eyes . It was a tiny , gray mouse making the piano go plink , plink . I carefully caught the little mouse . I named him Mozart after the famous composer . Question: What went "Plink , plink , plink"? Option1: A ghost. Option2: The piano keys
Output (English): The piano keys