Two people working on a ladder to get something from a tree.
Two people trying to get the cat out of the tree.
Two people working on a ladder in a tree may not necessarily be trying to get a cat out of it.
exists e1 p1 x1 x2 x3 x4.(a_topic(x1) & Topic(e1,p1) & exists e2 x5 x6.(Theme(e2,x5) & Actor(e2,x2) & v_get(e2) & from(x5,x6) & n_tree(x6) & n_thing(x5)) & on(e1,x4) & n_ladder(x4) & Actor(e1,x3) & v_work(e1) & (x1 = x3) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists e1 p1 x1 x2 x3 x4.(n_tree(x4) & n_cat(x3) & a_topic(x1) & Topic(e1,p1) & Actor(e1,x2) & v_try(e1) & exists e2.(r_out(e2) & of(e2,x4) & Theme(e2,x3) & Actor(e2,x2) & v_get(e2)) & (x1 = x2) & n_people(x1) & card_eq_2(x1))