A group of people are attempting to live a heavy object on top of a vehicle.
some people top of a vehicle.
Just because people live a heavy object on top of a vehicle doesn't imply people top of a vehicle.
exists e1 p1 x1 x2.(Topic(e1,p1) & Actor(e1,x1) & v_attempt(e1) & exists e2 s1 x3 x4 x5.(Theme(e2,x3) & Actor(e2,x1) & v_live(e2) & on(x3,x4) & of(x4,x5) & n_vehicle(x5) & n_top(x4) & n_object(x3) & a_heavy(s1) & Theme(s1,x3)) & of(x1,x2) & n_people(x2) & n_group(x1))
exists s1 x1 x2 x3.(a_topic(x1) & of(x1,x3) & n_vehicle(x3) & Theme(s1,x2) & a_top(s1) & (x1 = x2) & n_people(x1))