Assertion: aquifer's groundwater | /r/Synonym | fossil water
Facets:
value: often
type: TEMPORAL
Source sentences:
text: Groundwater is often called “fossil water” because it has remained in the ground for so long, often since the end of the ice ages.
text: Groundwater is often called “fossil water” because it has remained in the ground for so long, often since the end of the ice ages.