The 2-wheel axle is perpendicular to the axle of the bicycle, which helps to prevent tipping.
(The 2-wheel axle; is; perpendicular to the axle of the bicycle) (the axle of the bicycle; helps; to prevent tipping) Context(the axle of the bicycle helps,List([37, 73))):(the axle of the bicycle; helps to prevent; tipping)
the axle of the bicycle helps,List([37, 73))
The 2-wheel axle the axle of the bicycle the axle of the bicycle
is helps helps to prevent
perpendicular to the axle of the bicycle
to prevent tipping
tipping