Two men surf on a small wave with a city in the background.
The men are playing a video game together.
One can not be playing a video game and surf simultaneously.
exists e1 s1 x1 x2 x3 x4.(n_background(x4) & on(e1,x2) & in(x2,x4) & with(x2,x3) & n_city(x3) & n_wave(x2) & a_small(s1) & Theme(s1,x2) & Actor(e1,x1) & v_surf(e1) & n_man(x1) & card_eq_2(x1))
exists e1 s1 x1 x2 x3.(n_man(x1) & a_together(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_game(x2) & of(x2,x3) & n_video(x3))