Strabon is a semantic geospatial database system for storing linked geospatial data expressed in RDF and query them using an extension of SPARQL.
Triplestore / RDF
SPARQL
http://www.strabon.di.uoa.gr/
http://hg.strabon.di.uoa.gr/Strabon/
KRR&A Team
GR
2011
Academic, Open Source
Java
Sesame