Two people kiss as others walk by them on a street.
A couple is kissing on a busy street.
Even though they are kissing, they are not necessarily a couple.
exists e2 e1 x1 x2 x3 x4.(as(e1,x2) & on(e2,x4) & n_street(x4) & Actor(e2,x1) & n_thing(x1) & Theme(e2,x3) & v_walk(e2) & (x2 = x3) & -(x2 = x1) & n_person(x1) & n_person(x2) & Actor(e1,x1) & v_kiss(e1) & n_people(x1) & card_eq_2(x1))
exists e1 s1 x1 x2.(on(e1,x2) & n_street(x2) & a_busy(s1) & Theme(s1,x2) & Actor(e1,x1) & v_kiss(e1) & n_couple(x1))