Four girls ride sit on a riding tractor on a farm.
Little boys playing in the mud.
Four girls who sit versus boys playing.
exists e1 x1 x2 x3 x4 x5.(on(e1,x5) & n_farm(x5) & on(e1,x3) & n_tractor(x3) & of(x3,x4) & n_riding(x4) & Actor(e1,x1) & v_sit(e1) & n_ride(x1) & of(x1,x2) & n_girl(x2) & card_eq_4(x1))
exists e1 s1 x1 x2 x3.(n_mud(x3) & a_topic(x1) & in(e1,x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_boy(x1) & a_little(s1) & Theme(s1,x1))