Three are standing on a mountain.
Three friends climbed to the top of a mountain.
Three are not assumed to be friends.  Standing on a mountain does not necessarily imply that they climbed to the top.
exists e1 x1 x2.(on(e1,x2) & n_mountain(x2) & Actor(e1,x1) & v_stand(e1) & n_thing(x1) & card_eq_3(x1))
exists e1 x1 x2 x3.(n_top(x2) & to(e1,x2) & of(x2,x3) & n_mountain(x3) & Actor(e1,x1) & v_climb(e1) & n_friend(x1) & card_eq_3(x1))