<https://www.ptc.com/ja/case-studies/evyap-dvm-iot-solutions-reduce-scrap-improve-oee>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.ptc.com/ja/case-studies/evyap-dvm-iot-solutions-reduce-scrap-improve-oee>