B. A. , H. J. , and H. E. Hladká-b, The prague dependency treebank : Three-level annotation scenario, Treebanks : Building and Using Syntactically Annotated Corpora, 2001.

C. M. Seddah-d, Le corpus Sequoia : annotation syntaxique et exploitation pour l'adaptation d'analyseur par pont lexical, Traitement Automatique des Langues Naturelles (TALN), 2012.

C. J. and P. M. Kruschwitz-u, Phrase Detectives : a web-based collaborative annotation game, Proceedings of the International Conference on Semantic Systems (I-Semantics'08), 2008.

C. S. , T. A. Barbero, . A. Leaver-fay, . Tuite-k, . Khatib-f et al., The challenge of designing scientific discovery games, Proceedings of the Fifth International Conference on the Foundations of Digital Games, pp.40-47, 2010.