Boy and girl running along the beach.
Bystanders watch boy and girl.
A boy and girl running doesn't mean bystanders watch.
exists s1 x1 x2 x3 x4.(n_beach(x4) & ne_nam_boy(x1) & a_topic(s1) & subset_of(x2,s1) & along(x2,x4) & n_run(x2) & of(x2,x3) & n_girl(x3) & subset_of(x1,s1))
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_watch(e1) & n_girl(x4) & n_boy(x3) & subset_of(x4,x2) & subset_of(x3,x2) & n_bystander(x1))