Task: Text Completion
Input (English): A man is showing a boy trying to solve a rubix cube. a timer <sep> (A) is in the sky repeating the lesson while dave talks to him about it. (B) counts down from a top hat as he holds the cube. (C) is going to time the boy and other people around him are trying as well. (D) is blowing, the man solves the puzzle, and poses to the camera.
Output (English): C