Two dogs interacting with each other.
Two dogs are playing together.
Interacting does not always entail playing together.
exists e1 x1 x2.(a_topic(x1) & all x3.(n_other(x3) -> with(e1,x3)) & Actor(e1,x2) & v_interact(e1) & (x1 = x2) & n_dog(x1) & card_eq_2(x1))
exists e1 s1 x1.(a_together(s1) & Manner(e1,s1) & Actor(e1,x1) & v_play(e1) & n_dog(x1) & card_eq_2(x1))