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: Are antihelminthic benzimidazoles novel HIF activators that prevent oxidative neuronal death via binding to tubulin?
Answer: These studies demonstrate that tubulin-binding drugs can activate a component of the hypoxic adaptive response, specifically the stabilization of HIF-1α and its downstream targets. Tubulin-binding drugs, including antihelminthic benzimidazoles, also abrogate oxidative neuronal death in primary neurons. Given their safety in humans and known ability to penetrate into the central nervous system, antihelminthic benzimidazoles may be considered viable candidates for treating diseases associated with oxidative neuronal death, including stroke.

Ex Output:
yes


Ex Input:
Question: Does the yeast histone chaperone hif1p function with RNA in nucleosome assembly?
Answer: These results suggest that specific RNA species may function in concert with histone chaperones to assemble chromatin.

Ex Output:
yes


Ex Input:
Question: Are biologic factors associated with tumor oxygenation prognostic in patients with stage III esophageal cancer : long-term results?
Answer: The long-term results confirm that hemoglobin levels during radiotherapy and tumor cell expression of EPO-R are significant prognostic factors in patients with locally advanced esophageal cancer.

Ex Output:

yes