Two people ride their bikes down a dirt road.
A pack of bicyclers are pedaling down the highway.
two people are not a pack  dirt road is not a highway
exists e1 x1 x2 x3 x4.(down(e1,x3) & n_road(x3) & of(x3,x4) & n_dirt(x4) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2) & of(x2,x1) & n_thing(x1) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_highway(x3) & down(e1,x3) & Actor(e1,x1) & v_pedal(e1) & of(x1,x2) & n_bicycler(x2) & n_pack(x1))