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 expression of epigenetic modifiers significantly altered by exposure to secondhand smoke?
Answer: Quantification of the expression of genes encoding DNA methyltransferases (Dnmt1, Dnmt3a, Dnmt3b and Dnmt3l), methyl binding domain proteins (Mecp2, Mbd2 and Mbd3) and histone deacetylases (Hdac1 and Hdac2) by quantitative reverse-transcription polymerase chain reaction analysis showed modest but not statistically significant differences in the relative transcription of these key epigenetic regulators between SHS-exposed mice and age-matched controls. The non-significant changes in the expression of main epigenetic modifiers in SHS-exposed mice imply that SHS may predominantly induce genotoxic effects, particularly at non-tumorigenic doses, whereas epigenetic effects may only be secondary and manifest en route to tumor formation.

Ex Output:
no


Ex Input:
Question: Does comprehensive analysis suggest simple processes underlying EEG/ERP - demonstration with the go/no-go paradigm in ADHD?
Answer: We show how these processes accord with and provide insight on the waveforms reported in the literature.

Ex Output:
yes


Ex Input:
Question: Does residual disease predict outcomes after definitive resection for incidental gallbladder cancer?
Answer: Survival in patients with RD at local or regional sites was not significantly different than that seen in stage IV disease, with neither subgroup clearly benefiting from reoperation. Outcomes were poor in all patients with RD, regardless of location.

Ex Output:

yes