<https://zh.coursera.org/lecture/taiwan-medical/4-3-end-stage-renal-disease-in-taiwan-kL386#lecture>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://zh.coursera.org/lecture/taiwan-medical/4-3-end-stage-renal-disease-in-taiwan-kL386>