A man putting shingles on a roof.
A man is on a ladder with a hammer.
A man putting shingles on a roof does not necessarily mean that he is on a ladder with a hammer.
exists e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x4) & n_roof(x4) & Theme(e1,x3) & Actor(e1,x2) & v_put(e1) & n_shingle(x3) & (x1 = x2) & n_man(x1))
exists p1 x1.(exists x2 x3.(on(x1,x2) & with(x2,x3) & n_hammer(x3) & n_ladder(x2)) & n_man(x1))