The Bremen Ambient Assisted Living Laboratory (BAALL) ontology is a repository of knowledge useful for agents providing assisted living, e.g. knowledge about food and dietary recommendations and restrictions. In this laboratory you will see how to query a fragment of the ontology, and in so doing, also get an intro to ontologies and description logic.
For more information, you can visit the webpage of BAALL to get a better idea of the complete project.
To try out the ontology queries: