Two bikers talk as they pass each other.
Two runners talk as they pass each other.
Bikers are on either a motorcycle or bicycle which are both wheeled pieces of equipment, whereas runners are on their feet and use no equipment.
exists e1 p1 x1.(all x2.(n_other(x2) -> exists e2.(Theme(e2,x2) & Actor(e2,x1) & v_pass(e2))) & n_thing(x1) & as(e1,p1) & Actor(e1,x1) & v_talk(e1) & n_biker(x1) & card_eq_2(x1))
exists e1 p1 x1.(all x2.(n_other(x2) -> exists e2.(Theme(e2,x2) & Actor(e2,x1) & v_pass(e2))) & n_thing(x1) & as(e1,p1) & Actor(e1,x1) & v_talk(e1) & n_runner(x1) & card_eq_2(x1))