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: Does 18F-FDG-PET/CT better localize active spinal infection than MRI for successful minimally invasive surgery?
Answer: FDG-PET/CT demonstrated limited areas of abnormality allowing accurate delineation, and is thus useful to narrow the surgical fields. Since overall diagnostic accuracy of FDG-PET/CT was superior to that of MRI, FDG-PET/CT is a useful technique to narrow the surgical field for successful less invasive surgery.

Ex Output:
yes


Ex Input:
Question: Does a null mutation in ANGPTL8 associate with either plasma glucose or type 2 diabetes in humans?
Answer: Disruption of ANGPTL8 function in humans does not seem to have a large effect on measures of glucose tolerance.

Ex Output:
no


Ex Input:
Question: Does graft shape affect midfoot correction and forefoot loading mechanics in lateral column lengthening osteotomies?
Answer: Graft shape had no effect on the correction of talonavicular abduction or dorsiflexion but did influence coronal plane motion and forefoot loading mechanics. Also, overcorrecting the abduction deformity was predictive of increased lateral plantar pressures.

Ex Output:

yes