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.

Question: Is microvasculopathy observed in early or late endomyocardial biopsies related to angiographically confirmed transplanted heart coronary vasculopathy?
Answer: Microvasculopathy observed early or late after OHT was not related to angiographically confirmed CAV.
no

Question: Does revaccination with Bacillus Calmette-Guerin ( BCG ) vaccine reduce morbidity from malaria in African children?
Answer: We found no evidence that BCG revaccination reduces morbidity from malaria.
no

Question: Does two-stage hepatectomy with effective perioperative chemotherapy induce tumor growth or growth factor expression in liver metastases from colorectal cancer?
Answer: Two-stage hepatectomy did not seem to induce tumor growth activity or growth factor expression. The 2-stage strategy in combination with effective preoperative chemotherapy is a valuable strategy for colorectal metastases.
no