Task: Question Answering
Input (English): It was a beautiful summer night, and my sister and I decided to make a bonfire. We went outside to see if we had enough firewood and discovered that we didn't have enough wood for our fire. I decided to go out into the forest to pick up some more wood while my sister used the wood we had to get a fire started. I walked around for ten minutes picking up any stray logs, branches or twigs that I could find. Once I had gathered a decent amount of firewood, I went back to find my sister and see how the fire was coming. She had gotten a pretty good start but the fire definitely needed some more wood. I took the branches I had gathered them and made them into a teepee formation on top of the fire my sister had started. The branches quickly lit and our fire was huge in no time! We enjoyed our night out by the fire and cooked some hot dogs and made s'mores at the end of the night. 
Question: When did they light the fire?
Output (English): Before gathering more wood.