Assertion: manatee | /r/CapableOf | surface for air
Facets:
value: regularly
type: DEGREE
value: periodically
type: TEMPORAL
Source sentences:
text: Manatees spend approximately 50% of the day sleeping submerged, surfacing for air regularly at intervals of less than 20 minutes.
text: They can stay underwater for about 15 minutes when they are resting, but when they are active they must resurface for air every three to four minutes.
text: Manatees surface for air every 3-5 minutes.
text: Manatees surface for air about once every five minutes, but can remain submerged as long as twenty minutes when they are resting.
text: Manatee lives with both, staying in the water but needing to surface for air.
text: Manatees spend about half of their days sleeping underwater, surfacing regularly for air at intervals of less than 20 minutes.
text: As we all stand and look with shielded eyes we can see the tip of their noses as they surface for air, and one visibly spouts water.
text: Since manatees are mammals they must surface for air.
text: They spend half of their day sleeping in the water, surfacing for air every 20 minutes.
text: They spend half of their day sleeping in the water, surfacing for air regularly, and at intervals of not longer than 20 minutes.
text: Therefore, they must hold their breath while diving, and need to surface for air periodically.