context: We got up early in the morning to drive to the mountains.  We reached the camp ground at around 3 pm.  The first thing we did was find a place to set up our tent.  We found a place which close to the lake.  The spot that we picked had a couple of large trees and a place where we could build a camp fire.  We set up our tent and put our sleeping bags inside.  Next, we went for a walk to gather wood for the camp fire.  We also found some rocks so that we could build a camp fire circle.  After we were finished setting up our camp, we got our fishing polls and went down to the lake.  We caught a couple of fish for dinner.  We put the fish in the cooler and then went swimming for a bit.  After swimming, we cleaned the fish and went back to the camp sight.  We cooked the fish over the camp fire.  Next, we roasted marshmallows.  We sat around the camp fire and talked.  We went to bed around 10:30 pm.
question: how many fish did they catch?
reference: A couple of fish
candidate: Just a couple.