A child swims with a woman.
A child floats in water.
A child who swims must float.
exists e1 x1 x2.(with(e1,x2) & n_woman(x2) & Actor(e1,x1) & v_swim(e1) & n_child(x1))
exists e1 x1 x2.(in(e1,x2) & n_water(x2) & Actor(e1,x1) & v_float(e1) & n_child(x1))