Assertion: cyclone's eye | /r/CapableOf | become defined
Facets:
value: better
type: DEGREE
Source sentences:
text: Late on June 1, the JTWC upgraded the storm to the equivalent of a minimal hurricane, estimating 1 minute maximum sustained winds of 120 km/h (75 mph), after the eye became better defined and the tightly-curved thunderstorm activity.