Use GoodRelations RDF data in HTML so it validates?

is it possible to use this:
http://www.ebusiness-unibw.org/wiki/GoodRelationsQuickstart#HTML_Patterns_for_Rich_Markup
in html and have it validate anyhow?

they tell you to “Insert the additional HTML markup given below anywhere in the body section of your main Web page” but no mention of the fact it’s invalid, at least in the versions of html i tried it in.

oops, stupid me, just noticed the “Updating the XHTML/HTML Page Header” bit at the end. that will probably sort it. so assuming it does, forget this post.