Task: Question Answering
Input (English): Passage: Yesterday morning , my alarm clock which wakes me up every morning did not go off . This caused me to be late to work yesterday , and I could not be late again to work today . When I got home yesterday , I realized it did not go off due to the batteries being dead . Therefore , I went back out and I went to the store to purchase a new package of batteries and a screwdriver . After opening the compartment I then removed the old batteries from the compartment and threw them out . I then replaced the batteries with the new batteries I had bought earlier . After replacing the batteries , I then put the compartment door back on and utilized the screwdriver to close the compartment . Upon closing the compartment , I reset the alarm settings so that it would go off this morning , and it did . I was on time to work today . Question: When did they open the battery compartment of their alarm clock? Option1: before buying batteries Option2: when they went to put in new batteries
Output (English): when they went to put in new batteries