A man on a tall ladder is repairing a machine.
machine is repaired by man using ladder
machine is repaired by man can also be said as man repairing a machine.
exists e1 s1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_repair(e1) & n_machine(x3) & on(x1,x2) & n_ladder(x2) & a_tall(s1) & Theme(s1,x2) & n_man(x1))
exists e2 e1 x1 x2 x3.(for(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_use(e2) & n_ladder(x3) & Actor(e1,x2) & n_man(x2) & Theme(e1,x1) & v_repair(e1) & n_machine(x1))