Assertion: extratropical cyclone | /r/CapableOf | begin as wave
Facets:
value: along weather fronts
type: LOCATION
Source sentences:
text: Extratropical cyclones begin as waves in large regions of enhanced mid-latitude temperature contrasts called baroclinic zones.
text: Extratropical cyclones begin as waves along weather fronts before occluding later in their life cycle as cold-core systems.