Based on the context and the answer, generate a question. 

Context: My day got a rocky start when , at 12:30 am , the fire alarm in my building went off . Disoriented , I made my way to the parking lot with my roommates . We stood out there for only ten minutes , then came back inside and in ten minutes more , I was back sound asleep in my cozy bed .

Answer:

There was a small fire or cooking incident in another apartment .



What caused the fire alarm to go off in the narrator 's building ?