Two brown dogs are playing in a field.
Two dogs are playing fetch.
Two dogs playing in a field does not necessarily mean that they are playing fetch.
exists e1 s1 x1 x2.(in(e1,x2) & n_field(x2) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & a_brown(s1) & Theme(s1,x1) & card_eq_2(x1))
exists e1 s1 x1.(a_fetch(s1) & Manner(e1,s1) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & card_eq_2(x1))