RDF/A implementations?

Hello,

I wonder if there are RDF/A implementations.

I mean, kind of "scrapers" that can be used to
extract RDF triples from RDF/A files.

I looked into the SWBPD Task Force page, 
but no info on implementations is found there.

Any information is very welcome.

Thanks in advance,

Yoshio Fukushige
fuku@w3.org
fukushige.yoshio@jp.panasonic.com