Assertion: wetland | /r/HasProperty | covered by ice
Facets:
value: in the winter
type: TEMPORAL
value: at high altitudes
type: LOCATION
value: in the northern latitudes
type: LOCATION
Source sentences:
text: Some of the work was done in the winter when wetlands were covered by ice and snow.
text: In the northern latitudes or at high altitudes, some wetlands are covered with ice in the winter and are temporarily "out of service" for birds adapted to a water environment, but emergent vegetation might still offer shelter and food for some species.