kids playing at a playground on a stack of tires
The kids were playing with a stack of tires that belonged to a truck.
Kids playing on a stack of tires does not mean they  belonged to a truck
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & at(e1,x3) & on(x3,x4) & of(x4,x5) & n_tire(x5) & n_stack(x4) & n_playground(x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_kid(x1))
exists e1 e2 x1 x2 x3 x4 x5.(n_kid(x1) & with(e1,x2) & of(x2,x3) & to(e2,x5) & n_truck(x5) & Actor(e2,x4) & v_belong(e2) & (x3 = x4) & n_tire(x3) & n_stack(x2) & Actor(e1,x1) & v_play(e1))