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 medical students ' clinical skills match their teachers ' expectations : survey at Zagreb University School of Medicine , Croatia?
Answer: Students' self-assessed level of clinical skills was lower than that expected by their teachers. Education during clinical rotations is not focused on acquiring clinical skills, and additional clinical skills' training has a positive influence on students' self-assessed level of clinical skills. There was no consensus among teachers on the required level of students' clinical skills.

Ex Output:
no


Ex Input:
Question: Is kREX2 essential for either procyclic or bloodstream form Trypanosoma brucei?
Answer: KREX2 is a U-specific exonuclease that is dispensable for RNA editing in vivo in T. brucei BFs and PFs. This result suggests that the U deletion activity, which is required for RNA editing, is primarily mediated in vivo by KREX1 which is normally found associated with only one type of editosome. The retention of the KREX2 gene implies a non-essential role or a role that is essential in other life cycle stages or conditions.

Ex Output:
no


Ex Input:
Question: Is the WFS1 ( Wolfram syndrome 1 ) a major susceptibility gene for the development of psychiatric disorders?
Answer: Our results suggest that WFS1 is not a major susceptibility gene for the development of psychiatric disorders in our population.

Ex Output:

no