Children play on a slide in a lake.
Children hop on an indoor trampoline.
Children playing on a slide in a lake and children hopping on an indoor trampoline are pieces of information that contradict each other.
exists e1 x1 x2 x3.(on(e1,x2) & in(x2,x3) & n_lake(x3) & n_slide(x2) & Actor(e1,x1) & v_play(e1) & n_child(x1))
exists s1 x1 x2 x3.(a_topic(x1) & on(x1,x3) & n_trampoline(x3) & a_indoor(s1) & Theme(s1,x3) & n_hop(x1) & (x1 = x2) & ne_nam_children(x2))