Two dogs playing in the snow near a chair.
Two dogs are chasing a ball in the snow.
Dogs can play in ways other than chasing a ball.
exists e1 x1 x2 x3 x4.(n_snow(x3) & a_topic(x1) & in(e1,x3) & near(x3,x4) & n_chair(x4) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_dog(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_snow(x3) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_chase(e1) & n_ball(x2) & n_dog(x1) & card_eq_2(x1))