Assertion: tropical cyclone | /r/HasProperty | classified by the warning centres
Facets:
value: officially
type: MANNER
value: on one of two scales
type: OTHER
Source sentences:
text: Tropical cyclones that develop in the Northern Hemisphere are unofficially classified by the warning centres on one of three intensity scales.
text: Tropical cyclones that develop in the Southern Hemisphere are only officially classified by the warning centres on one of two scales, which are both based on 10-minute sustained wind speeds: The Australian tropical cyclone intensity scale is used to classify systems within the Australian or South Pacific tropical cyclone basin.