You will be given a definition of a task first, then some input of the task.
In this task, you're given a context passage, followed by a question that needs to be answered. Based on the paragraph, you must write unambiguous answers to the questions and your answer must refer to a specific phrase from the paragraph. If multiple answers seem to exist, write the answer that is the most plausible.

Just recently, the light in my hallway went out, and since my younger brother is afraid of sleeping in the dark, this became an unnecessary problem. In order to calm him down, my dad went to the nearest hardware store to buy a brand new light bulb. He needed to make sure that the light bulb was the right size, so he took the old, burned out light bulb with him to compare. After finding the right size bulb, he paid for it and brought it back home. He then grabbed a nearby chair so that he could stand on to reach the empty socket where the bulb would go. He had me turn off the light switch, which would make sure that he would not get electrocuted while putting the bulb on or burned when it turns on. After less than 5 minutes, he is finished screwing in the bulb. We flip the switch to see if it works, and it does. My brother was now relieved. 
Question: How did the light bulb burn out?
Output:
From use.