Two women and a child walking through a river.
The child laughs at the ladies.
The child is either walking with the ladies or laughing at them.
exists e1 s1 x1 x2 x3 x4.(a_topic(s1) & subset_of(x2,s1) & through(e1,x4) & n_river(x4) & Actor(e1,x3) & v_walk(e1) & (x2 = x3) & n_child(x2) & subset_of(x1,s1) & n_woman(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_lady(x2) & n_child(x1) & at(e1,x2) & Actor(e1,x1) & v_laugh(e1))