<https://secure.gravatar.com/avatar/e801aaa33a93a4117cbf3ab32d93bb40?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://lightairthailand.com/blog/news/impact-of-lightair-ionflow-technology-on-viruses/>