Assertion: person's fever | /r/HasProperty | imported by ship
Facets:
value: from the west indies
type: LOCATION
value: somehow
type: MANNER
Source sentences:
text: Eventually the colonists would discover that yellow fever was somehow being imported by ships from the West Indies and implement quarantine policies, but it was not until 1900 that U.S. Army researchers pinpointed mosquitoes as the transmission vector for the disease.