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.
--------
Question: 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.

Answer: yes


Question: Question: Is nonadherence with ambulatory saliva sampling associated with biased salivary testosterone estimates?
Answer: The results suggest that common ambulatory nonadherence with scheduled saliva sampling is associated with biased salivary testosterone estimates. They will inform further studies estimating salivary testosterone with ambulatory saliva-sampling designs and highlight the relevance of strategies to improve or confirm adherence, beyond routinely used instructions.

Answer: yes


Question: Question: Does inclusion of CA-125 improve mathematical models developed to distinguish between benign and malignant adnexal tumors?
Answer: Adding information on CA-125 to clinical information and ultrasound information does not improve discrimination of mathematical models between benign and malignant adnexal masses.

Answer:
no