System for querying annotated treebanks in PML format. The querying uses it own query language with graphical representation. It has two different implementations (SQL and Perl) and several clients (TrEd, browser-based, command line interface).
Tree bank tool
treebanks, web-application, multi-lingual
Computational Linguistics, Linguistics
Charles University in Prague
Petr Pajas; Jan Štěpánek; Michal Sedlák