A brown dog waits for the Frisbee to come down before catching it.
The dog is waiting for it's food.
A Frisbee and food are different things for which to wait.
exists p1 x3.(ne_geo_frisbee(x3) & exists e2 e1 s1 s2 x1 x2.(before(e1,e2) & Theme(e2,x2) & Actor(e2,x1) & v_catch(e2) & n_thing(x2) & a_down(s2) & Manner(e1,s2) & Actor(e1,x1) & v_come(e1) & for(x1,x3) & n_wait(x1) & of(x1,x2) & n_dog(x2) & a_brown(s1) & Theme(s1,x1)))
exists e1 p1 x1 x2.(n_thing(x1) & n_dog(x1) & exists x3.((x1 = x3) & n_food(x3)) & for(e1,x1) & Actor(e1,x2) & v_wait(e1) & (x1 = x2))