
The OnAIR (Ontology Aided Information Retrieval), system allows users to enter a query in natural language and searches a digital video database for the clip which best answers the query. The system was first developped by Christian Paz-Trillo and Paula Braga and was part of Christian's Masters Thesis, supervised by Renata Wassermann.
Links:
[1] http://napsol.icmc.usp.br/en/node/202
[2] http://ccsl.ime.usp.br/pt-br/onair