Assertion: caffeine | /r/HasProperty | alkaloid
Facets:
Source sentences:
text: Caffeine is an alkaloid occurring naturally in some 60 plant species, of which cocoa beans, kola nuts, tea leaves and coffee beans are the most well-known.
text: Caffeine is an alkaloid that the coffee plant uses to kill bugs, which eat its seeds.
text: Caffeine, an alkaloid that occurs naturally in coffee, is a mild stimulant that produces a variety of physical effects.
text: Caffeine is an alkaloid, an organic base.