Software: Youtube (Web Usage)
User query: Loop the video, add to watch later and create a watch list 'what is love'. (https://www.youtube.com/watch?v=y7eizVOfksE)
Difficulty: hard
Ground-truth plan:
Task 1: Loop a video on YouTube 
Subtask 1: Right-click on the video. 
Subtask 2: Click on 'Loop' from the menu. 
Task 2: Save a video to watch later on YouTube 
Subtask 1: Click on 'Save' underneath the video. 
Subtask 2: Click on 'Watch Later' to save the video. 
Task 3: Create a playlist 'what is love' on YouTube 
Subtask 1: Click on 'Save' underneath the video. 
Subtask 2: Click on 'Create new playlist'. 
Subtask 3: Type 'what is love' as the playlist name. 
Subtask 4: Click on 'Create' to save the playlist. 
Task 4: Add video to 'what is love' playlist 
Subtask 1: Click on 'Save' underneath the video. 
Subtask 2: Select 'what is love' playlist to add the video.