A young boy and a young girl ride a bicycle down a street , with dirt and small trees around them .
Chances are about even that a couple of young children are wearing blue helmets a red backpacks .
It is impossible that a couple of young children are wearing blue helmets a red backpacks .
Chances are about even that a couple of young children are wearing blue helmets a red backpacks .
A couple of young children are wearing blue helmets a red backpacks .