Assertion: typhoon | /r/CapableOf | start to undergo explosive intensification
Facets:
value: from a category 1 typhoon
type: OTHER
Source sentences:
text: Early on September 23, both the JMA and the JTWC upgraded Jelawat to a typhoon as it started to undergo explosive intensification, from a category 1 typhoon, to a category 4 typhoon in 12 hours, as it developed a small eye.