Abstract:In this paper we present a project aimed at enhancing a collaborative environment for resource management (SemT++) with domain knowledge, represented by a local ontology and a connection to external data, retrieved from Linked Open Data sets. Our approach is based on the assumption that heterogeneous resources can be viewed as "information objects", and can be organized within collaborative spaces (i.e., "round tables"). Information objects, among other properties, are characterized by their content. Annotations representing resource content (e.g., "Torino") can thus be linked to domain knowledge which provides users with useful information. We tested this approach on the geographic domain, by connecting resources to commonsense geographic knowledge and to information available in GeoNames.