A boy traverses a pool in a human-sized hamster ball.
A boy races against others in a human-sized hamster ball across the pool.
A boy traverses a pool in a human-sized hamster ball not necessarily races against others.
exists e1 s1 x1 x2 x3 x4.(in(e1,x3) & n_ball(x3) & of(x3,x4) & n_hamster(x4) & a_human-sized(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_traverse(e1) & n_pool(x2) & n_boy(x1))
exists s1 x1 x2 x3 x4 x5 x6.(n_pool(x6) & a_topic(x1) & in(x1,x4) & across(x4,x6) & n_ball(x4) & of(x4,x5) & n_hamster(x5) & a_human-sized(s1) & Theme(s1,x4) & against(x1,x3) & -(x3 = x1) & n_person(x1) & n_person(x3) & n_race(x1) & of(x1,x2) & n_boy(x2))