A boy runs along a beach while a group of young girls watch.
A boy is playing a guitar while carrying a skateboard.
The boy wouldn't be playing a guitar while carrying a skateboard. He also wouldn't run along a beach at the same time.
exists e1 s1 x1 x2 x3 x4 x5.(while(e1,x3) & of(x3,x4) & n_watch(x4) & of(x4,x5) & n_girl(x5) & a_young(s1) & Theme(s1,x4) & n_group(x3) & along(e1,x2) & n_beach(x2) & Actor(e1,x1) & v_run(e1) & n_boy(x1))
exists e2 e1 x1 x2 x3.(while(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_carry(e2) & n_skateboard(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_guitar(x2) & n_boy(x1))