Boy in yellow tank top laughing on a beach.
A boy laughing at the sounds on the beach.
Laughing does not imply it is at the sounds on the beach.
exists e1 s1 s2 s3 x1 x2 x3 x4.(ne_nam_boy(s1) & a_topic(s1) & in(s1,x1) & on(e1,x4) & n_beach(x4) & Actor(e1,x3) & v_laugh(e1) & (x1 = x3) & Theme(s3,x2) & a_top(s3) & (x1 = x2) & n_tank(x1) & a_yellow(s2) & Theme(s2,x1))
exists e1 x1 x2 x3 x4.(n_beach(x4) & n_sound(x3) & a_topic(x1) & at(e1,x3) & on(x3,x4) & Actor(e1,x2) & v_laugh(e1) & (x1 = x2) & n_boy(x1))