Assertion: petrel | /r/HasAspect | an area of ​​35,200,000 km2
Facets:
value: based on the estimates of 20
type: OTHER
Source sentences:
text: Based on the estimates of 20, this petrel has an area of ​​35,200,000 km2 (13,590,796 square miles) and an occurrence of 10 to 20 million adult birds.