PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX lubm: <http://www.lehigh.edu/~zhp2/2004/0401/univ-bench.owl#>
PREFIX owl: <http://www.w3.org/2002/07/owl#>

# Retrieve all GraduateStudents

SELECT ?s
WHERE {
?s rdf:type lubm:GraduateStudent .
}
