A worker in a hard hat standing on a roof looks off into the distance.
Nobody is standing
The worker is standing so there is somebody is standing.
exists e2 e1 s1 s2 x1 x2 x3 x4 x5.(n_distance(x5) & a_off(s2) & Manner(e2,s2) & into(e2,x5) & Actor(e2,x1) & v_look(e2) & in(x1,x2) & on(e1,x4) & n_roof(x4) & Actor(e1,x3) & v_stand(e1) & (x2 = x3) & n_hat(x2) & a_hard(s1) & Theme(s1,x2) & n_worker(x1))
-exists e1 x1.(Actor(e1,x1) & v_stand(e1) & n_person(x1))