Assertion: cyclone's formation | /r/CapableOf | prompt fm
Facets:
value: to upgrade the storm's classification
type: PURPOSE
Source sentences:
text: The storm's appearance and areal coverage of showers remained stationary until the following day, when the formation of rainbands wrapping about the centre of the system prompted the FMS to upgrade the storm's classification to a category 1 tropical cyclone on the Australian tropical cyclone scale, assigning it the name Pam.