The mother in green is looking at her son while he is crying.
The son is laughing.
The son is laughing or he is crying.
exists e1 p1 x1 x2 x3.(n_male(x3) & n_son(x3) & of(x3,x1) & n_female(x1) & n_mother(x1) & exists e2.(Actor(e2,x3) & v_cry(e2)) & while(e1,p1) & at(e1,x3) & Actor(e1,x1) & v_look(e1) & in(x1,x2) & n_green(x2))
exists e1 x1.(n_son(x1) & Actor(e1,x1) & v_laugh(e1))