A man playing ultimate frisbee makes a diving catch.
The man caught a football.
If he is playing ultimate frisbee, he wouldn't be catching a football.
exists e2 e1 s1 s2 x1 x2 x3.(Theme(e2,x3) & Actor(e2,x1) & v_make(e2) & n_catch(x3) & a_diving(s2) & Theme(s2,x3) & n_frisbee(x1) & a_ultimate(s1) & Theme(s1,x1) & Actor(e1,x1) & v_play(e1) & of(x1,x2) & n_man(x2))
exists e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_catch(e1) & n_football(x2))