Athletes are running in an event.
athletes are drinking in a bar
Drinking and running are different
exists e1 x1 x2.(in(e1,x2) & n_event(x2) & Actor(e1,x1) & v_run(e1) & n_athlete(x1))
exists e1 x1 x2.(in(e1,x2) & n_bar(x2) & Actor(e1,x1) & v_drink(e1) & n_athlete(x1))