You will be given a definition of a task first, then some input of the task.
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: Are high Atopobium vaginae and Gardnerella vaginalis vaginal loads associated with preterm birth?
Answer: High vaginal loads of A. vaginae and G. vaginalis are associated with late miscarriage and prematurity in high-risk pregnancies. A high vaginal load of A. vaginae (DNA level 10(8) copies/mL) identifies a population at high risk of preterm birth. Further studies that both screen for and then treat A. vaginae are needed.
Output:
yes