A little boy looks at the camera while a woman behind him seems to be laughing very hard and the woman on the right has a big smile on her face.
The woman laughing is playing a joke on the boy.
The woman could have seen some thing funny and that's why she was laughing, she was not necessarily playing a joke on the boy.
exists e1 p1 s1 x1 x2 x4.(n_right(x4) & n_male(x2) & n_camera(x2) & exists e2 e3 p2 s2 x3 x5 x6.(Theme(e3,x5) & Actor(e3,x3) & v_have(e3) & on(x5,x6) & n_face(x6) & of(x6,x3) & n_female(x3) & n_smile(x5) & a_big(s2) & Theme(s2,x5) & on(x3,x4) & n_woman(x3) & n_woman(x3) & Topic(e2,p2) & Actor(e2,x3) & v_seem(e2) & exists e4 p3.(exists s3.(r_very(s3) & Theme(s3,x3) & a_hard(s3)) & Topic(e4,p3) & Actor(e4,x3) & v_laugh(e4)) & behind(x3,x2)) & while(e1,p1) & at(e1,x2) & Actor(e1,x1) & v_look(e1) & n_boy(x1) & a_little(s1) & Theme(s1,x1))
exists e1 x1 x2 x3 x4.(n_boy(x4) & n_laughing(x1) & of(x1,x2) & n_woman(x2) & Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & on(x3,x4) & n_joke(x3))