Task: Question Answering
Input (English): Passage: I drove the 5 miles from my house to my church and walked in . Church service starts in 15 minutes so I took my place at the piano . The preacher gave the opening remarks and after , the choir began to sing . To play the song , I began to move my fingers over the keys and push the foot pedals attached to the piano . After the service opening , the preacher preached his sermon . This time I occasionally played with the preacher during the sermon . After service was over , I softly played the piano while the congregation shook hands with the preacher and walked out the door . After the last person left , I put the key cover back on the piano , shook the preacher 's hand , got in my car and went home . Question: What did they play while the choir sang? Option1: Piano Option2: guitar
Output (English): Piano