<https://studyforge.net/ca/bc-course-downloads/d2l-brightspace-pre-calculus-11/#primaryimage>
<http://schema.org/width>
"211"^^<http://www.w3.org/2001/XMLSchema#integer>
<https://studyforge.net/ca/bc-course-downloads/d2l-brightspace-pre-calculus-11/>