Two men sit on the tailgate of a pickup truck.
The two men are sitting on a Ford pickup truck.
Two men sitting a truck need not be on a Ford truck.
exists e1 x1 x2 x3 x4.(n_tailgate(x2) & on(e1,x2) & of(x2,x3) & n_truck(x3) & of(x3,x4) & n_pickup(x4) & Actor(e1,x1) & v_sit(e1) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2 x3 x4.(n_man(x1) & card_eq_2(x1) & on(e1,x2) & n_truck(x2) & of(x2,x4) & n_pickup(x4) & (x2 = x3) & ne_org_ford(x3) & Actor(e1,x1) & v_sit(e1))