Yeah, but maybe one should use a proper RDFa attribute, like dbpedia-owl:Person/height and dbpedia-owl:Person/weight. HTML5 elements simply aren't detailed enough.
I'm really sorry, but I am not aware of RDFa attributes?
It's in the RDFa Primer [1]; I mean specifically the @property, @about and @typeof attributes, which are used to augment existing HTML elements with RDF semantics.