Assertion: shark's skin | /r/HasProperty | tough
Facets:
value: very
type: DEGREE
value: to give protection
type: PURPOSE
Source sentences:
text: Its skin is exceptionally tough and is prized for leather.
text: Sharks have very rough skin that is covered in sharp scales.
text: A shark has tough skin that is covered by dermal denticles, which are small plates covered with enamel, similar to that found on our teeth.
text: Though there are exceptions, sharks typically have a tough skin that is dull gray in colour and is roughened by toothlike scales .
text: And because their teeth and jaws are so strong, it's no problem for sharks to chew or rip through tough skin, bones, or hard shells.
text: The skin of sharks is very rough to give them protection from other animals including other sharks; this is why shark skin was once used as sand paper.
text: Sharks have very rough skin