<https://mlearn-faqs.smp.org/faq-items/how-to-change-the-instructor-in-a-section/#primaryimage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/ImageObject>
<https://mlearn-faqs.smp.org/faq-items/how-to-change-the-instructor-in-a-section/>