context: Yesterday I hosted a barbecue for about twenty people. It was a really fun event and I enjoyed having my friends over to my beach house.  To prepare for the barbecue I went shopping at the grocery store for hamburgers, hotdogs, rolls, chips, salad and soda.  When I returned from the store I prepared the salads and laid all of the food out to be cooked on the grill.  As my friends began to arrive one of them volunteered to cook all of the food while the rest of us socialized and played volley ball.  As the food was prepared we all enjoyed eating a burger or hot dog and then we quickly returned to playing different lawn games such as croquet and horseshoes.  After a few hours my friends decided that it was time to go home.  We really had a fun afternoon and I am excited to host a few more barbecues this summer.
question: How long did the food take to cook?
reference: Thirty minutes
candidate: A few minutes