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.

[EX Q]: Question: Is l-arginine , the natural precursor of NO , effective for preventing bone loss in postmenopausal women?
Answer: We conclude from these results that supplementation with L-arginine hydrochloride is not effective for improving bone mass in humans.
[EX A]: no

[EX Q]: Question: Does co-Transplantation of Skin-Derived Precursors and Collagen Sponge facilitate Diabetic Wound Healing by Promoting Local Vascular Regeneration?
Answer: Accelerated wound healing and enhanced local capillary regeneration could be observed 14 days after skin ablation from both SKPs and collagen sponge co-transplanted and collagen sponge only groups. Subsequent analyses further revealed superior pro-angiogenic effects from the SKP and collagen sponge co-delivered group, which are mainly attributable to in vivo transdifferentation and paracrine signalling of the SKPs.
[EX A]: yes

[EX Q]: Question: Do whole-genome sequencing and epidemiological analysis provide evidence for cross-transmission of mycobacterium abscessus in a cohort of pediatric cystic fibrosis patients?
Answer: We have not demonstrated cross-transmission of M. abscessus within our hospital, except between 1 sibling pair. Alternative routes of acquisition of M. abscessus infection, in particular the environment, require further investigation.
[EX A]:
no