a couple walking down the street carrying bags
A couple making the long trip home after grocery shopping.
Just because the couple are carrying bags does not mean that they have been grocery shopping nor that they are on a long trip home.
exists e1 x1 x2 x3 x4 x5.(n_bag(x3) & of(x3,x5) & n_carrying(x5) & of(x3,x4) & n_street(x4) & a_topic(x1) & down(e1,x3) & Actor(e1,x2) & v_walk(e1) & (x1 = x2) & n_couple(x1))
exists e1 s1 x1 x2 x3 x4 x5 x6.(n_trip(x3) & a_long(s1) & Theme(s1,x3) & a_topic(x1) & after(e1,x5) & n_shopping(x5) & of(x5,x6) & n_grocery(x6) & Time(e1,x4) & n_home(x4) & Theme(e1,x3) & Actor(e1,x2) & v_make(e1) & (x1 = x2) & n_couple(x1))