Assertion: shark's lifespan | /r/HasProperty | 20 to 30 years
Facets:
Source sentences:
text: The average lifespan of hammerhead sharks in the wild is 20 to 30 years.
text: The lifespan of sharks is about 20 – 30 years .
text: The lifespan of a great hammerhead shark is around 20 to 30 years.