Two guys are in a gym, one watching the other hit a heavy bag.
Two friends are at the gym to learn how to box.
You can't imply that two guys are in the gym are friends.
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.(n_gym(x2) & exists p2.(at(x1,x2) & Topic(x2,p2) & exists e1 s1 x3.(a_how(s1) & Manner(e1,s1) & to(e1,x3) & n_box(x3) & Actor(e1,x2) & v_learn(e1))) & n_friend(x1) & card_eq_2(x1))