⇒ Do Elements have URIs?
I was discussing a problem with triples generated from RDFa and the in-browser applications I have developed using [Green Turtle](https://github.com/alexmilowski/green-turtle) with a learned colleague of mine whose opinions I value greatly. In short, I wanted to duplicate the kinds of processing I'm doing in the browser so I can run it through XProc and do more complicated processing of the documents. Yet, I rely on the *origin of triples* in the document for my application to work.
⇒ Refactoring the RDFa API - Getting the Data
After numerous inquires about my opinion on making the [RDFa API](http://www.w3.org/TR/rdfa-api/) simpler, I decided to do a bit of research. I've written several fairly complex *in-situ* services that use the RDFa API to provide functionality within the browser. As such, I decided to look at which parts of the RDFa API or the extensions that [Green Turtle ](https://code.google.com/p/green-turtle/) provides are actually used.
⇒ What is the Subject Origin?
[RDFa](http://www.w3.org/TR/rdfa-core/) allow annotations of subjects (identifiers) to exist in multiple locations within a document. When a user tries to retrieve elements by this subject identifier, what element is returned? Currently, the [RDFa API](http://www.w3.org/TR/rdfa-api/) says that all the element origins in the document identified via `@about` , `@resource,` `@src` , `@href` are returned by the `document.getElementsBySubject()` API method.