Assertion: lemming | /r/CapableOf | move onto lake ice
Facets:
value: in the spring of peak years
type: TEMPORAL
Source sentences:
text: We do not understand why lemmings would move onto sea and lake ice in the spring of peak years, but spring is a time of social upheaval caused by the environmental changes associated with snow melt, and the physiological changes associated with onset of the breeding season.