Assertion: typhoon's system | /r/CapableOf | become symmetrical
Facets:
value: exceptionally
type: DEGREE
Source sentences:
text: The system became exceptionally symmetrical, as the convective bands had further deepened and wrapped tighter around a 13 nautical miles (24 km; 15 mi) pin-hole eye, prompting JTWC upgrading Utor to a super typhoon.
text: The system became exceptionally symmetrical, as the convective bands had further deepened, which prompted JTWC upgrading Utor to a super typhoon.