A man and a woman are riding bikes on a street.
The couple is riding to the supermarket.
A man and a woman does not necessarily imply they are couple and the fact that they are riding bikes on a street does not necessarily mean that they are riding to the supermarket.
exists e1 x1 x2 x3 x4 x5.(Theme(e1,x4) & Actor(e1,x1) & v_ride(e1) & on(x4,x5) & n_street(x5) & n_bike(x4) & subset_of(x3,x1) & n_woman(x3) & subset_of(x2,x1) & n_man(x2))
exists e1 x1 x2.(n_supermarket(x2) & n_couple(x1) & to(e1,x2) & Actor(e1,x1) & v_ride(e1))