a girl with pigtails is playing in the ocean by the beach.
A boy is playing soccer.
A boy is not a girl.
exists e1 x1 x2 x3 x4.(n_beach(x4) & n_ocean(x3) & by(e1,x4) & in(e1,x3) & Actor(e1,x1) & v_play(e1) & with(x1,x2) & n_pigtail(x2) & n_girl(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_soccer(x2) & n_boy(x1))