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.

Q: Question: Does the rtPA increase MMP-9 activity in serum during ischaemic stroke?
Answer: Thrombolysis applied for IS treatment increases MMP-9 activity in serum, however, rtPA does not facilitate the conversion of pro-MMP-9 into the active form. Our results also suggest the involvement of MMP-3 to the biochemical processes occurring during acute phase of IS.

A: yes
****
Q: Question: Does overexpression of long noncoding RNA HOTAIR predict a poor prognosis in patients with cervical cancer?
Answer: our data indicate that high expression of HOTAIR is involved in cervical cancer progression and could be a potential target for diagnosis and gene therapy.

A: yes
****
Q: Question: Does [ Private umbilical cord blood banking reduce the number of samples for scientific stem cell research ]?
Answer: Under the assumption of active and successful recruitment of scientific UCB samples, private blood banking does not significantly reduce this rate and therefore is a negligible rival in the competition for sufficient numbers of UCB samples for research.

A:
no
****