Assertion: dense fog | /r/CapableOf | reduce visibility
Facets:
value: to tens of feet
type: OTHER
value: to under 50 meters
type: OTHER
Source sentences:
text: Dense fogs, usually caused by rapid changes in humidity or combined with smoke, can reduce visibility to under 50 meters (60 yards).
text: Dense fog over highways can reduce visibility to only tens of feet making it dangerous to travel, even with headlights.