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: Do quantitative EEG markers relate to Alzheimer 's disease severity in the Prospective Dementia Registry Austria ( PRODEM )?
Answer: Selected QEEG markers show strong associations with AD severity. Both cognitive and resting state should be used for QEEG assessments.

Ex Output:
yes


Ex Input:
Question: Is histamine released in acute thermal injury in human skin in vivo : a microdialysis study?
Answer: Histamine is not released in human skin during the acute phase of a thermal injury.

Ex Output:
no


Ex Input:
Question: Does early experience with a new three-dimensional annuloplasty ring for the treatment of functional tricuspid regurgitation?
Answer: Tricuspid valve repair with the Contour 3D annuloplasty ring can be performed with a low rate of residual TR at hospital discharge, a low reoperation rate, and with an excellent early functional outcome.

Ex Output:

yes