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.

Input: Consider Input: Question: Does clinical presentation and disease course of inflammatory bowel disease differ by race in a large tertiary care hospital?
Answer: We identified significant differences in disease characteristics and extraintestinal manifestations between AA and Ca IBD patients in a large tertiary care population. These results have implications for future genotype-phenotype studies.

Output: yes

Input: Consider Input: Question: Does information-enhancement and goal setting techniques for increasing adaptive motivation and decreasing urge to drink alcohol?
Answer: The results show that sense of control can be experimentally induced. This finding has important clinical implications.

Output: yes

Input: Consider Input: Question: Do modifications of the ABCD2 score improve the risk stratification of transient ischemic attack patients?
Answer: Modifications of the ABCD2 score changed the risk category for few patients and did not improve the overall predictive value of the score.
Output: no