Assertion: plague | /r/HasProperty | carried by flea
Facets:
value: on rats
type: OTHER
Source sentences:
text: Carried by the fleas on rats, the plague initially spread to humans near the Black Sea and then outwards to the rest of Europe as a result of people fleeing from one area to another.
text: Plague is caused by the bacterium Yersinia pestis, and is carried by animals such as rats, ground squirrels and prairie dogs, and their fleas.
text: At the time, they did not realize the plague was carried by the fleas who lived on rats.