Assertion: hurricane's wind speed | /r/HasProperty | measured
Facets:
value: from a height of 33 feet
type: OTHER
value: over a period of one minute
type: TEMPORAL
Source sentences:
text: All sustained wind speeds are measured over a period of one minute and rounded to the nearest five following the standard set by the National Hurricane Center.
text: Wind speeds are measured from a height of 33 feet.