A casual family stroll by the water.
A man is playing a video game with his son.
They are either by the water or playing a video game.
exists s1 x1 x2 x3.(n_water(x3) & a_topic(x1) & by(x1,x3) & n_stroll(x1) & of(x1,x2) & n_family(x2) & a_casual(s1) & Theme(s1,x1))
exists e1 x1 x2 x3 x4.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & with(x2,x4) & n_son(x4) & of(x4,x1) & n_male(x1) & n_game(x2) & of(x2,x3) & n_video(x3) & n_man(x1))