Reflect RDFa snippets

Idea 1 (interlaced with the text):

<div xmlns:sioc="http://rdfs.org/sioc/ns#" typeof="sioc:Item">
<span class='reflect_protein'><a rel="sioc:topic" resource="http://purl.uniprot.org/uniprot/P05113"></a>IL-5</span>
</div>

Idea 2 (at the end of the document, non-redundant):

<div xmlns:sioc="http://rdfs.org/sioc/ns#" typeof="sioc:Item">
<span id='reflectEntity0'>9606.ENSP00000231454</span>
<a rel="sioc:topic" resource="http://purl.uniprot.org/uniprot/P05113"></a>
</div>