A boy is poking a long stick in a swimming pool.
The boy is trying to fish out his basketball that dropped in the pool.
The fact that a boy is poking a long stick in a pool doesn't imply to fish out dropped basketball.
exists e1 s1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_poke(e1) & in(x2,x3) & n_pool(x3) & of(x3,x4) & n_swimming(x4) & n_stick(x2) & a_long(s1) & Theme(s1,x2) & n_boy(x1))
exists e1 p1 x1 x2 x4.(n_pool(x4) & n_basketball(x2) & of(x2,x1) & n_male(x1) & n_boy(x1) & Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e3 e2 s1 x3.(a_out(s1) & Manner(e3,s1) & Theme(e3,x2) & Actor(e3,x1) & v_fish(e3) & in(e2,x4) & Actor(e2,x3) & v_drop(e2) & (x2 = x3)))