Two people are riding bikes up a hill
Two people are riding scwhins up a hill.
People are riding bicycles
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & up(x2,x3) & n_hill(x3) & n_bike(x2) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & up(x2,x3) & n_hill(x3) & n_scwhin(x2) & n_people(x1) & card_eq_2(x1))