A group of young men are running together on a beach.
A group of young men is playing video games.
A group of young men cannot be running and playing video games at the same time.
exists e1 p1 s1 x1 x2 x3.(on(e1,x3) & n_beach(x3) & exists s2.(Theme(s2,x1) & a_together(s2)) & Topic(e1,p1) & Actor(e1,x1) & v_run(e1) & of(x1,x2) & n_man(x2) & a_young(s1) & Theme(s1,x2) & n_group(x1))
exists e1 s1 x1 x2 x3 x4.(Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_game(x3) & of(x3,x4) & n_video(x4) & of(x1,x2) & n_man(x2) & a_young(s1) & Theme(s1,x2) & n_group(x1))