Task: Question Answering
Input (English): Passage: This past Saturday , my partner and I decided to have a barbecue at the park by our apartment . We invited a few friends to join us . On Saturday morning , we went grocery shopping and bought the ingredients to make cheeseburgers and hot dogs .  We also packed a backpack with other necessary supplies for a barbecue in the park , such as sunscreen and a picnic blanket . We then carried our supplies and our grill to the park . It was only a five minute walk away .  We found a nice spot to set up our things and about ten minutes later , our friends showed came and joined the festivities .  We grilled the burgers and hot dogs and then all ate a delicious lunch together . It was a great day . Question: Why did they buy the groceries? Option1: For the barbeque Option2: they needed supplies for camping
Output (English): For the barbeque