<|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 authors confirm that, for approved reasons, some access restrictions apply to the data underlying the findings. data are available from twitter api: https://dev.twitter.com/. twitter data used in this paper was purchased from datasift inc (http://datasift.com/). all analyses here are done in compliance with twitter and datasift terms of use. twitter data is available through either the public twitter api (https://dev.twitter.com/) or through authorized resellers such as gnip.com and datasift.com. (gnip.com has recently been acquired by twitter). the twitter data for this paper was purchased from datasift.com and analysis has been conducted in compliance with the twitter and datasift terms of use. readers interested in purchasing data similar to that used in our paper can contact datasift using the contact form (as we did) at: http://datasift.com/contact-us/. different representatives exist at datasift to cater to different user segments and geographical regions and this contact form provides the best way to reach a representative who can address a specific reader's query of interest.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>