Assertion: caffeine's effect | /r/HasProperty | short-lived
Facets:
Source sentences:
text: Theophylline and caffeine are very similar in structure, but caffeine’s effects are short-lived and last only up to 4 hours .
text: However, the effects of caffeine are short-lived, which often leads people to ingest more caffeine in order to maintain its desired effects on their energy level, concentration, or functioning.