Assertion: whale's blow | /r/HasProperty | visible
Facets:
value: because of water condensation
type: CAUSE
value: because of mucous particles
type: CAUSE
value: for several miles
type: TEMPORAL
Source sentences:
text: Blows are visible because water vapour in the whale
text: Often the blows are 5-6 metres high and are visible for several miles.
text: The blow is visible because of water condensation and mucous particles; blows of blue whales are frequently more than 6 metres (20 feet) high.