A cart that is so heavy it tipped over backwards and put the donkey that was pulling it in the air.
A donkey pulled car travels effortlessly down the road.
IF the donkey pulled car travels effortlessly, the cart does not tip over.
exists p1 s1 x1 x2 x4 x6.(n_air(x6) & n_thing(x4) & n_donkey(x4) & a_topic(x1) & exists e2 e3 e1 x3 x5.(Theme(e3,x4) & Actor(e3,x1) & v_put(e3) & in(e2,x6) & Theme(e2,x4) & Actor(e2,x5) & v_pull(e2) & (x4 = x5) & over(e1,x3) & n_backward(x3) & Actor(e1,x1) & v_tip(e1)) & n_thing(x1) & that(x1,p1) & r_so(s1) & Theme(s1,x2) & a_heavy(s1) & (x1 = x2) & n_cart(x1))
exists e1 s1 x1 x2 x3 x4.(n_road(x4) & down(e1,x4) & a_effortlessly(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_pull(e1) & n_travels(x2) & of(x2,x3) & n_car(x3) & n_donkey(x1))