A kid wearing a life jacket in a swimming pool.
Nobody is in the pool
There is a kid or nobody
exists e1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & in(x3,x5) & n_pool(x5) & of(x5,x6) & n_swimming(x6) & n_jacket(x3) & of(x3,x4) & n_life(x4) & (x1 = x2) & n_kid(x1))
exists x2.(n_pool(x2) & -exists p1 x1.(in(x1,x2) & n_person(x1)))