Task: Question Answering
Input (English): Passage: Last night I invited some friends over to my house . It was a nice evening so we decided to build a bonfire . First , we cleared a patch of grass and built a large circle made of big rocks . Then we went into the woods to gather some dry tree branches and dry leaves . We then put them inside the circle of rocks and made a large pile . We lit a match and put it into the large pile , so the branches and leaves caught fire . We then sat around the bonfire , told stories , sang songs , and roasted some marshmallows . In a few hours , the fire began to die out , but it allowed us to have a good night . After the bonfire was out , we left and went to bed . Question: What made the huge flames? Option1: bonfire Option2: The rocks
Output (English): bonfire