Assertion: narwhal's blubber | /r/HasProperty | excellent source of insulation
Facets:
Source sentences:
text: - Blubber or fat is an excellent source of insulation, it also provides a means of storing food when times are good and there is plenty to eat as well as providing buoyancy.
text: (anatomical and physiological) - Blubber or fat is an excellent source of insulation, it also provides a means of storing food when times are good and there is plenty to eat as well as providing buoyancy.