Task: Question Answering
Input (English): Last weekend I invited a bunch of my friends over to my house for a barbecue that started around 4 in the afternoon. I was going to cook some chicken and steaks that I had for whoever wanted them, but my friends were also going to bring some of their own food to cook as well. My barbecue grill is in my backyard. Before cooking I put several pieces of hickory wood at the bottom of the grill with some small sticks and paper to get the pieces of wood burning. A few minutes after catching fire the flames went out but the wood turned white and stayed really hot. That's when I knew its was time to start cooking the meat. Throughout the day me and my friends would keep putting food on and off the grill for whoever was hungry while everyone else was either hanging around outside or staying inside to stay out of the heat. I had about 15 people at my house and the last people didn't leave until late in the evening. It was my first barbecue of the summer and I can't wait to do it again. 
Question: Who came to the barbecue?
Output (English): 15 of their friends