A woman is holding a boy in a swimming pool.
A mom teaches her son how to swim.
A woman holding a boy in a pool are not necessarily a mom and son. The woman holding not necessarily teaches how to swim.
exists e1 x1 x2 x3 x4.(in(e1,x3) & n_pool(x3) & of(x3,x4) & n_swimming(x4) & Theme(e1,x2) & Actor(e1,x1) & v_hold(e1) & n_boy(x2) & n_woman(x1))
exists e1 p1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_teach(e1) & Topic(x2,p1) & exists e2.(Actor(e2,x2) & v_swim(e2)) & n_son(x2) & of(x2,x1) & n_female(x1) & n_mom(x1))