Assertion: primordial ocean | /r/CapableOf | fill the basin vastitas borealis
Facets:
value: in the northern hemisphere
type: LOCATION
value: at a time period
type: TEMPORAL
Source sentences:
text: This primordial ocean, dubbed Paleo-Ocean and Oceanus Borealis , would have filled the basin Vastitas Borealis in the northern hemisphere, a region which lies 4–5 km (2.5–3 miles) below the mean planetary elevation, at a time period of approximately 4.1–3.8 billion years ago.