Large pieces of heavy equipment are being used to repair a road.
Heavy equipment is being used.
To  repair a road , one needs a  heavy equipment.
exists e1 p1 s1 s2 x1 x2.(Recipient(e1,p1) & Topic(e1,x1) & v_use(e1) & exists e2 x3.(Theme(e2,x3) & Actor(e2,x1) & v_repair(e2) & n_road(x3)) & of(x1,x2) & n_equipment(x2) & a_heavy(s2) & Theme(s2,x2) & n_piece(x1) & a_large(s1) & Theme(s1,x1))
exists e1 s1 x1.(Theme(e1,x1) & v_use(e1) & n_equipment(x1) & a_heavy(s1) & Theme(s1,x1))