The crowd is gathered to watch a sporting event.
The crowd is at a football game.
The crowd isn't necessarily at a football game if they are at a sporting event.
exists e1 p1 x1.(n_crowd(x1) & Recipient(e1,p1) & Topic(e1,x1) & v_gather(e1) & exists e2 s1 x2.(Theme(e2,x2) & Actor(e2,x1) & v_watch(e2) & n_event(x2) & a_sporting(s1) & Theme(s1,x2)))
exists p1 x1.(n_crowd(x1) & exists x2 x3.(at(x1,x2) & n_game(x2) & of(x2,x3) & n_football(x3)))