Software: Youtube (Web Usage)
User query: Set the video playback speed to 0.75 (https://www.youtube.com/watch?v=y7eizVOfksE)
Difficulty: simple
Ground-truth plan:
Task 1: Adjust the playback speed on YouTube 
Subtask 1: Hover over the video to reveal the settings gear icon. 
Subtask 2: Click on the settings gear icon. 
Subtask 3: In the menu that appears, select the option for playback speed. 
Subtask 4: Adjust the playback speed to 0.75.