Two big German Shepherd dogs play in the water.
Two dogs are sleeping in the grass.
Dogs cannot play and sleep at the same time.
exists e1 s1 s2 x1 x2 x3.(n_water(x3) & in(e1,x3) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & (x1 = x2) & ne_nam_shepherd(x2) & a_german(s2) & Theme(s2,x1) & a_big(s1) & Theme(s1,x1) & card_eq_2(x1))
exists e1 x1 x2.(n_grass(x2) & in(e1,x2) & Actor(e1,x1) & v_sleep(e1) & n_dog(x1) & card_eq_2(x1))