A couple is seated on a park bench near some blue balloons.
A couple is sitting on a bench.
when you are seated, then you are sitting.
exists e1 s1 x1 x2 x3 x4.(on(e1,x2) & near(x2,x4) & n_balloon(x4) & a_blue(s1) & Theme(s1,x4) & n_bench(x2) & of(x2,x3) & n_park(x3) & Theme(e1,x1) & v_seat(e1) & n_couple(x1))
exists e1 x1 x2.(on(e1,x2) & n_bench(x2) & Actor(e1,x1) & v_sit(e1) & n_couple(x1))