A man is riding a bike down a dirt path.
A man drives his car through the roadblock.
A man cannot be riding a bike and driving a car simultaneously.
exists e1 x1 x2 x3 x4.(down(e1,x3) & n_path(x3) & of(x3,x4) & n_dirt(x4) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2) & n_man(x1))
exists e1 x1 x2 x3.(n_roadblock(x3) & through(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_drive(e1) & n_car(x2) & of(x2,x1) & n_male(x1) & n_man(x1))