How to operate a wheelchair safely outdoors<br>Stay on even surfaces. Uneven surfaces can make any wheelchair get off balance. Even when someone is pushing a wheelchair, an uneven surface can cause harm.
The only instructions listed are to be wary of uneven surfaces.
There were no other instructions listed, outside of staying on even surfaces.
( z1 thing :ARG2-of ( z2 instruct ) :mod ( z3 only ) :ARG1-of ( z4 list ) :domain ( z5 wary :topic ( z6 surface :ARG1-of ( z7 even :polarity - ) ) ) )