Man using a sander to remove rust of metal.
The man is working on the metal.
For a man to use a sander to remove rust and metal, a man must be working hard on the material.
exists e1 p1 x1 x2 x3.(a_topic(x1) & Theme(e1,p1) & Recipient(e1,x3) & Actor(e1,x2) & v_use(e1) & exists e2 x4 x5.(Theme(e2,x4) & Actor(e2,x2) & v_remove(e2) & of(x4,x5) & n_metal(x5) & n_rust(x4)) & n_sander(x3) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(n_metal(x2) & n_man(x1) & on(e1,x2) & Actor(e1,x1) & v_work(e1))