A man is standing on a ladder in front of a cross, while a person is holding the ladder.
Two men are carefully putting up Christmas lights with a ladder.
The fact that a  man is standing on a ladder in front of a cross, while a person is holding the ladder.doesn't imply that two men are carefully putting up Christmas lights.
exists e1 p1 x1 x2 x3 x4.(exists e2 x5.(Theme(e2,x2) & Actor(e2,x5) & v_hold(e2) & n_person(x5)) & n_ladder(x2) & n_ladder(x2) & while(e1,p1) & in(e1,x3) & of(x3,x4) & n_cross(x4) & n_front(x3) & on(e1,x2) & Actor(e1,x1) & v_stand(e1) & n_man(x1))
exists e1 s1 s2 x1 x2 x3 x4.(a_carefully(s2) & Manner(e1,s2) & a_up(s1) & Manner(e1,s1) & with(e1,x4) & n_ladder(x4) & Theme(e1,x2) & Actor(e1,x1) & v_put(e1) & n_light(x2) & (x2 = x3) & ne_tim_christmas(x3) & n_man(x1) & card_eq_2(x1))