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 Q]: Question: Does prospective international cohort study demonstrate inability of interim PET to predict treatment failure in diffuse large B-cell lymphoma?
Answer: This large international cohort delivers 3 novel findings: treatment response assessed by I-PET is comparable across disparate healthcare systems, secondly a negative I-PET findings together with good clinical status identifies a group with an EFS of 98%, and thirdly a single I-PET scan does not differentiate chemoresistant lymphoma from complete response and cannot be used to guide risk-adapted therapy.
[EX A]: yes

[EX Q]: Question: Are `` These issues n't talked about at home '' : a qualitative study of the sexual and reproductive health information preferences of adolescents in Vanuatu?
Answer: Providing adolescents with comprehensive SRH information can have life-long protective benefits, however there are important content gaps in information currently provided in Vanuatu. The broad range of sources preferred by adolescents highlights the need to strengthen information provision through multiple channels to reach in and out-of-school youth and respond to individual needs and contexts.
[EX A]: yes

[EX Q]: Question: Do beliefs and attitudes of nurses and physicians about resuscitate orders and who should speak to patients and families about them?
Answer: Staff nurses were more likely than their physician colleagues to believe they should be allowed to initiate DNR discussions, were more confident in their ability to discuss DNR than house officers, and had more positive attitudes. These results suggest further exploration of the role nurses should play in the DNR process.
[EX A]:
no