Two girls in flip-flops walking.
Girls are walking to the park.
They could be walking anywhere, not necessarily to the park.
exists s1 x1 x2.(a_topic(x1) & in(x1,x2) & n_walking(x2) & a_flip-flops(s1) & Theme(s1,x2) & n_girl(x1) & card_eq_2(x1))
exists e1 x1 x2.(n_park(x2) & to(e1,x2) & Actor(e1,x1) & v_walk(e1) & n_girl(x1))