<|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 data used in this paper are mainly extracted from the baidu (http://www.baidu.com) search engine, which is generally acknowledged as the most widely used free and public search engine in china. we obtained the url links for news regarding the two trending events from baidu"2010 mexico oil spill. http://news.baidu.com/ns?word=%e5%a2%a8%e8%a5%bf%e5%93%a5%e6%b9%be%e6%bc%8f%e6%b2%b9&pn=[*]&cl=2&ct=1&tn=news&rn=20&ie=utf-8&bt=0&et=0" "2011 bohai bay oil spill http://news.baidu.com/ns?word=%e6%b8%a4%e6%b5%b7%e6%b9%be%e6%bc%8f%e6%b2%b9&pn=[*]&cl=2&ct=1&tn=news&rn=20&ie=utf-8&bt=0&et=0", and the relationship of the url links and the pages can be expressed as the following: [*]=2p-10 p=1,2,3,4,```,n (1) where p is the online page number of baidu news about the trending events, and n is the total number of pages of search results about the given hot event. in this research, there are a total of 38 pages regarding the 2010 gulf of mexico oil spill and 37 pages regarding the 2011 bohai bay oil spill. in the pages, we captured the title, media source, date and time by two different labels, and we automatically gathered all 1,487 pieces of chinese news on 29 october 2014 about the 2011 bohai bay oil spill and the 2010 gulf of mexico oil spill. in the initial gathered data, there were 49 pieces of duplicate news form the same media at the same time and four news duplicate pieces of news before the event occurred in the 748 news stories about the 2010 gulf of mexico oil spill and 29 pieces of duplicate news from the same media at the same time and eight duplicate news pieces from before the event occurred in the 739 news about the 2011 bohai bay oil spill. thus, after data cleaning, we obtained 695 pieces of news about the 2010 gulf of mexico oil spill and 702 pieces of news about the 2011 bohai bay oil spill.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>