SPARQL Query Generation from NL

I been searching for this utility on Google & Delicious. But sometimes these crawlers & taggers fail to find information which a human being can do if they have patience to read a paper, which others have written.

After a failed effort on writing a partial query converter on my own, today i found a paper which mentions few good tools which can do this for me.

If you are also looking for any such requirement. please visit following links. AquaLog is for people who think in java.