Two people walking their dogs on the beach.
the people are running fast
People cannot be walking and running at the same time.
exists e1 x1 x2 x3 x4.(n_beach(x4) & a_topic(x1) & on(e1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_walk(e1) & n_dog(x3) & of(x3,x1) & n_thing(x1) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists e1 s1 x1.(n_people(x1) & a_fast(s1) & Manner(e1,s1) & Actor(e1,x1) & v_run(e1))