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.

Example Input: Question: Does pI3K and Bcl-2 inhibition prime glioblastoma cells to apoptosis through downregulation of Mcl-1 and Phospho-BAD?
Answer: Combination therapy with ABT-263 and GDC-0941 has novel therapeutic potential by specifically targeting aberrantly active, deregulated pathways in GBM, overcoming endogenous resistance to apoptosis.
Example Output: yes

Example Input: Question: Does mR Elastography demonstrate Increased Brain Stiffness in Normal Pressure Hydrocephalus?
Answer: This study demonstrates increased brain stiffness in patients with normal pressure hydrocephalus compared with age- and sex-matched healthy controls; these findings should motivate future studies investigating the use of MR elastography for this condition and the efficacy of shunt therapy.
Example Output: yes

Example Input: Question: Are pharmacokinetics and pharmacodynamics of melagatran , the active form of the oral direct thrombin inhibitor ximelagatran , influenced by acetylsalicylic acid?
Answer: In young healthy volunteers, ASA had no effect on the PK or PD properties of melagatran at the studied dose. That the combination of ximelagatran with ASA may be used with acceptable safety must be verified in the relevant patient populations.
Example Output:
no