<|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: The influence factors of the accessibility of garden green space were various, such as the quality of the landscape, the service level, the economic development level of the city and, etc. These factors have not been further studied yet. The calculation of the accessibility of this study was a barrier-free accessibility and did not take into account the factors such as the setting of the traffic light at the intersection. The gradient analysis was only a reflection of the accessibility distribution characteristics in the four directions, but the calculation method was a useful attempt of the accessibility analysis. If **data** of more years could be obtained to comprehensive represent the accessibility of the temporal and spatial distribution characteristics, the method could be used for more comprehensive analysis and evaluation of the urban green system which would lead to greater guidance for the scientific layout of the urban green space system.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

no<|eot_id|>