Sea otters rely on their thick fur (108,000 hairs/cm&#178;) to keep them warm.
(Sea otters; rely; on their thick fur; to keep them warm) Context(Sea otters rely,List([0, 15))):(Sea otters; rely on their thick fur to keep; them)
Sea otters rely,List([0, 15))
Sea otters Sea otters
rely rely on their thick fur to keep
on their thick fur to keep them warm
them