Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for receiving a request for information about a term from a user; obtaining, at one or more processors, one or more characteristics of the user; obtaining, at the one or more processors, a template including a plurality of attributes associated with the term; generating, at the one or more processors and based on the one or more characteristics of the user, a response, the response including a respective description for each attribute of the plurality of attributes in the template; and providing for output, data representing the response.