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.

Example Input: Question: Does bacillus anthracis S-layer protein BslA bound to extracellular matrix by interacting with laminin?
Answer: These data demonstrated that laminin is a ligand for BslA.
Example Output: yes

Example Input: Question: Is the risk of uterine rupture increased with single- compared with double-layer closure : a Swedish cohort study?
Answer: There was no significant difference in the rate of uterine rupture when single-layer closure was compared with double -layer closure of the uterus.
Example Output: no

Example Input: Question: Does the HeartShield device reduce the risk for right ventricular damage in patients with deep sternal wound infection?
Answer: The use of the HeartShield device significantly minimizes the contact between the right ventricle and the sternal edges, thereby decreasing the risk for life-threatening complications due to bleeding.
Example Output:
yes