Software: Youtube (Web Usage)
User query: Play the video and goback to 0 and pause. (https://www.youtube.com/watch?v=y7eizVOfksE)
Difficulty: simple
Ground-truth plan:
Task 1: Play and Pause the Video 
Subtask 1: Press the spacebar to play the video. 
Subtask 2: Press the 0 key to jump to the beginning of the video. 
Subtask 3: Press the spacebar to pause the video.