Many bikers are riding through the road during a cloudy day.
Bikers are riding on a dangerous road.
Just because the road is cloudy does not mean it is dangerous.
exists e1 s1 x1 x2 x3.(n_road(x2) & during(e1,x3) & n_day(x3) & a_cloudy(s1) & Theme(s1,x3) & through(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_biker(x1) & n_quantity(x1))
exists e1 s1 x1 x2.(on(e1,x2) & n_road(x2) & a_dangerous(s1) & Theme(s1,x2) & Actor(e1,x1) & v_ride(e1) & n_biker(x1))