Assertion: poison ivy's plant | /r/HasAspect | thorn
Facets:
value: on them
type: LOCATION
Source sentences:
text: Leaflet clusters are alternate on the vine, and the plant has no thorns.
text: Roses, blackberries, thistles, black locusts trees and barberry shrubs are just a few of the many plants that have thorns to protect them from being eaten or damaged by animals.
text: The big mystery however is that the suspected plants in both cases had thorns on them.