A boy in goggles is swimming.
A boy is sitting next to the pool with his parents.
A boy cannot be swimming and sitting simultaneously.
exists p1 x1 x2.(exists x3.((x1 = x3) & n_swimming(x3)) & in(x1,x2) & n_goggles(x2) & n_boy(x1))
exists e1 x1 x2 x3.(n_parent(x3) & of(x3,x2) & n_male(x2) & n_pool(x2) & with(e1,x3) & to(e1,x2) & r_next(e1) & Actor(e1,x1) & v_sit(e1) & n_boy(x1))