<|begin_of_text|><|start_header_id|>system<|end_header_id|>

You are an expert at identifying data availability statements in scientific text. A data availability statement describes where research data can be found or how it can be accessed.<|eot_id|><|start_header_id|>user<|end_header_id|>

Determine if the following text contains a data availability statement. Answer with 'yes' or 'no'.

Text: This paper proposes and confirms that the CW-regions make full use of the comparative advantages of human capital to promote the faster development of GTP, and the GTP in these regions further brings about the backwardness advantage of green development. However, more evidence is needed for the theoretical viewpoints presented in this paper. First, more environmental **data** of China is needed for empirical research, including PM2.5, ecological footprint, etc. Second, it makes the research conclusions limited due to the lack of industrial data. Third, the green GDP calculated in this paper only deducts environmental pollution losses and resource consumption losses, and the calculation method needs further improvement. Fourth, this research is only for China, and it needs empirical support from more countries around the world, especially countries with similar obvious regional economic imbalances, to verify the possibility and universality of the backwardness advantage of green economy. It also needs to be pointed out that the backwardness advantages of green economy in the CW-regions of China proposed in this paper are based on the comparative advantages of human capital in these regions. Therefore, it is necessary to look for international cases with better and relatively balanced educational development, rather than countries with backward education.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

no<|eot_id|>