<https://www.musicradar.com/tuition/guitars/video-rgt-grade-three-rock-rhythm-playing-tg239-571984>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.musicradar.com/tuition/guitars/video-rgt-grade-three-rock-rhythm-playing-tg239-571984>