The Computational Linguistics Group at the Department of Linguistics at Stockholm University makes available an aligned parallel treebank (called SMULTRON) and an accompanying alignment and query tool (called the Stockholm TreeAligner).
SMULTRON (Stockholm MULtilingual TReebank) is a parallel treebank and contains around 1000 sentences in English, German and Swedish. The sentences have been PoS-tagged and annotated with phrase structure trees. The trees have been aligned across languages on sentence, phrase and word level. Additionally, the German and Swedish monolingual treebanks contain lemma information.
The Stockholm TreeAligner allows the user to view alignment links across two parallel trees. It also allows the user to create and modify such links between corresponding nodes or words in two treebanks.
The Stockholm TreeAligner displays trees from input files in TigerXML format with node labels, edge labels, and crossing branches, making it useful for browsing TigerXML files.
Moreover the Stockholm TreeAligner allows querying parallel treebanks (inspired by the TIGERSearch query language but additionally allowing alignment queries). Search results are highlighted in a graphical display.