<https://digitalab.org/2021/11/how-to-use-a9g-gps-gsm-gprs-pudding-board-part2/#breadcrumb>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://digitalab.org/2021/11/how-to-use-a9g-gps-gsm-gprs-pudding-board-part2/>