Two people carrying groceries down a busy sidewalk.
A couple heads home after buying food for dinner.
Just because two people are walking down a sidewalk together does not mean they are a couple.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_carry(e1) & down(x3,x4) & n_sidewalk(x4) & a_busy(s1) & Theme(s1,x4) & n_grocery(x3) & (x1 = x2) & n_people(x1) & card_eq_2(x1))
exists e1 e2 x1 x2 x3 x4.(after(e1,e2) & for(e2,x4) & n_dinner(x4) & Theme(e2,x3) & Actor(e2,x1) & v_buy(e2) & n_food(x3) & Theme(e1,x2) & Actor(e1,x1) & v_head(e1) & n_home(x2) & n_couple(x1))