Given a passage with a question and an answer to that question, classify if the answer actually answers the question into 'yes' or 'no'. Output 'yes' if the answer answers the question and output 'no' if the answer does not answer the question.

[Q]: Question: Is high salt intake associated with a higher risk of cardiovascular events : a 7.2-year evaluation of a cohort of hypertensive patients?
Answer: In a cohort of hypertensive patients, high salt intake independently predicts the occurrence of CV events, particularly of stroke.
[A]: yes


[Q]: Question: Does l-Tryptophan influence acute ventilatory response at moderate altitude?
Answer: L-tryptophan does not impair ventilatory adaptation to mild hypoxia at moderate altitude.
[A]: no


[Q]: Question: Does lipopolysaccharide-induced preconditioning protect against traumatic spinal cord injury by upregulating Nrf2 expression in rats?
Answer: LPS preconditioning effectively alleviates TSCI-induced impairment and preserves nervous function in a Nrf2-dependent manner.
[A]:
yes