Premise: Naproxen ( brand names : Aleve , Naprosyn , and many others ) is a nonsteroidal anti-inflammatory drug ( NSAID ) of the propionic acid class ( the same class as ibuprofen ) that relieves pain , fever , swelling , and stiffness .
Hypothesis: Naproxen is a nonsteroidal anti-inflammatory drug.
Label: ENTAILMENT