Assertion: artichoke's leaf | /r/HasAspect | thorn
Facets:
value: on the tips
type: LOCATION
value: on them
type: LOCATION
Source sentences:
text: The leaves of the artichoke have thorns on them so watch out!
text: The outer leaves (called "bracts") of the bud have thorns on the tips (thornless varieties have been cultivated).