To play with the demo and having no court decision at hand,
you can upload decisions of the Constitutional Court of the Czech Republic
that are posted at http://nalus.usoud.cz/
or decisions of the Supreme Court of the Czech Republic that are posted at
Go there and use the form to filter out decisions you are interested in.
Open one of them, copy and paste it into the window on the left,
select a proper document publisher (The Supreme Court is the default)
and then click Run JTagger.