Assertion: porpoise's eye | /r/HasProperty | open
Facets:
value: during this lengthy time period
type: TEMPORAL
value: during this time
type: TEMPORAL
Source sentences:
text: Also, during this time, the eye opposite the sleeping half of the brain is open while the other eye is closed.
text: Also during this lengthy time period, both eyes of the mom and calf were open, indicating that they weren't even sleeping 'dolphin-style'.