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.

Ex Input:
Question: Is herpes simplex virus type 1 transcription detectable in quiescent human stromal keratitis by in situ hybridization?
Answer: At the level of detection afforded by in situ hybridization, HSV persistent in scarred human corneas after stromal keratitis appears to be transcriptionally dormant. This contrasts with the situation in neurons of latently infected sensory ganglia, in which LATs are present at high levels.

Ex Output:
no

Ex Input:
Question: Does ginsenoside Rg3 improve erectile function in streptozotocin-induced diabetic rats?
Answer: Oral gavage with Rg3 appears to both prevent degeneration of neurons in the dorsal nerves and exert an antioxidant effect in the corpus cavernosum of rats.

Ex Output:
yes

Ex Input:
Question: Does endometrial infusion of human chorionic gonadotropin at the time of blastocyst embryo transfer impact clinical outcomes : a randomized , double-blind , placebo-controlled trial?
Answer: Endometrial infusion of hCG at the time of blastocyst ET does not improve sustained implantation rates.

Ex Output:
no