Two guys are in a gym, one watching the other hit a heavy bag.
Two guys at the gym are on the treadmills.
If one is watching the other hit a heavy bag, then it is unlikely that they are on treadmills.
exists p1 x1 x6.(-(x6 = x6) & n_hit(x6) & exists x2.(in(x1,x2) & all s1 x3.((n_bag(x3) & a_heavy(s1) & Theme(s1,x3)) -> exists e1 x4 x5.(rel(x2,x4) & for(x4,x3) & Theme(e1,x6) & Actor(e1,x5) & v_watch(e1) & (x4 = x5) & n_thing(x4) & card_eq_1(x4))) & n_gym(x2)) & n_guy(x1) & card_eq_2(x1))
exists p1 x1 x2 x3.(n_treadmill(x3) & n_gym(x2) & on(x1,x3) & at(x1,x2) & n_guy(x1) & card_eq_2(x1))