If rocks are spaced close together, hikers can use poles to keep their balance while stepping from one rock to the next.
(rocks; are spaced close together; ) (hikers; can use; poles; to keep their balance while stepping from one rock to the next) Context(hikers can use,List([36, 50))):(hikers; can use poles to keep; their balance; T:while stepping from one rock to the next)
hikers can use,List([36, 50))
rocks hikers hikers
are spaced close together can use can use poles to keep
poles to keep their balance while stepping from one rock to the next
their balance T:while stepping from one rock to the next