A child in a pool wearing water-wings.
The child can not swim.
Not every child is in a pool.
exists e1 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_wear(e1) & n_water-wing(x4) & (x2 = x3) & n_pool(x2) & n_child(x1))
exists x1.(n_child(x1) & -exists e1 p1.(exists e2.(Actor(e2,x1) & v_swim(e2)) & Topic(e1,p1) & Actor(e1,x1) & v_can(e1)))