Assertion: manatee | /r/HasProperty | four feet long
Facets:
value: at birth
type: TEMPORAL
value: usually
type: TEMPORAL
Source sentences:
text: At birth, manatees are usually approximately four feet long and weigh around 60 pounds.
text: So, if a manatee is four feet long at birth and nine feet long at the age of five, that manatee may have grown one foot each year.