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 previous laparotomy a contraindication to laparoscopy-assisted gastrectomy for early gastric cancer?
Answer: There was no difference in outcome following LAG between the PSURG and NSURG groups in the present study. The PSURG patient is not contraindicated for LAG assuming careful attention is given for all operative procedures, including port insertion and dissection of intra-abdominal adhesions.

Ex Output:
no


Ex Input:
Question: Are anti-cyclic citrullinated peptide antibodies associated with familial Mediterranean fever?
Answer: Our results show that anti-CCP antibodies are not associated with FMF.

Ex Output:
no


Ex Input:
Question: Does dental anxiety screening practices and self-reported training need among Australian dentists?
Answer: The use of formal, validated scales for screening DA is minimal. Training in anxiety management appears to be low and is an area that could be expanded upon.

Ex Output:

yes