Stefan Schnell researches patterns of how speakers of diverse languages express connected states-of-affairs when communicating with each other, and in particular how they manage new and already known information, and choose different types of expression for these categories. For these purposes, Stefan has designed methods of corpus annotation across diverse languages, and has developed web-accessible multi-language corpora with standardised layers of linguistic annotation. Stefan's current interest focus on the ways in which choices of linguistic expression for different roles in states of affairs may shape the ways in which the grammars of natural languages develop. Stefan has done fieldwork in North Vanuatu and has been compiling a corpus of the Austronesian-Oceanic language Vera'a. In addition to his work on a descriptive grammar of the language, Stefan is particularly interested in the ways the language is used differently by different groups of speakers on different occasions, and in different text genres.