TASK DEFINITION: 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.
PROBLEM: Question: Does helicobacter pylori infection in Mongolian gerbils initiate hematological diseases?
Answer: A single H. pylori infection is insufficient to cause onset of ITP or IDA and other factors may be required for disease onset.

SOLUTION: no

PROBLEM: Question: Does dual tasking during postural stepping responses increase falls but not freezing in people with Parkinson 's disease?
Answer: For people with PD and FoG, forward falls may not always be caused by FoG, particularly under attention-distracting conditions.

SOLUTION: yes

PROBLEM: Question: Does pneumoperitoneum with carbon dioxide enhance liver metastases of cancer cells implanted into the portal vein in rabbits?
Answer: Compared with laparotomy, CO2 pneumoperitoneum enhanced the development of liver metastases in this experimental model.

SOLUTION:
yes