<|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 study was all obtained from the following third parties: 1) road networks were obtained from the google map maker project. this is a crowd-sourced initiative that provides detailed, digitized road networks for academic and humanitarian purposes. the data application form is available from this location: https://services.google.com/fb/forms/mapmakerdatadownload/. 2) the service provision assessment data is similarly freely available. the raw survey data as well as the facility point locations are available from the demographic and health surveys program website: http://dhsprogram.com/what-we-do/survey-types/spa.cfm. 3) the population data was obtained from the worldpop project, which is an open access initiative. this data was obtained from their website: http://www.worldpop.org.uk. 4) the haiti administrative boundaries used were obtained from an online central data repository, and are freely available for public download from this location: http://www.gadm.org. 5) the namibia administrative boundaries were obtained from the namibia statistics agency and the data request form can be obtained from this location: http://nsa.org.na/page/request-form/.<|eot_id|><|start_header_id|>assistant<|end_header_id|>

yes<|eot_id|>