Two people are hugging on a couch.
cat watches fish
Two people cannot be a cat. Watching fish is a different activity from hugging.
exists e1 x1 x2.(on(e1,x2) & n_couch(x2) & Actor(e1,x1) & v_hug(e1) & n_people(x1) & card_eq_2(x1))
exists x1 x2 x3.(n_fish(x1) & of(x1,x3) & n_watch(x3) & of(x1,x2) & n_cat(x2) & a_topic(x1))