A group of people riding bikes and walking across a road in the city .
A group of people are on bikes and on foot on the hang glider .
A group of people riding bikes and walking across a road in the city.
A group of people are on bikes and on foot on the hang glider.
You cannot be walking across a road and on a hang glider. You cannot use a hang glider while on a bike.
You can not be walking across a road and on a hang glider . You can not use a hang glider while on a bike .