SELECT * WHERE {

GRAPH ?g {
  ?x a :Person .
  ?x :homepage <http://www.cs.vu.nl/~guus/> .
  ?x :name ?n .
}

GRAPH <mailto:danbri@danbri.org> {
  <#homepageExperts> :member ?g .

}


# the mailto@danbri.org graph could contain for eg:
#  <#homepageExperts> :member <mailto:pathayes@example.com> .
#  <#homepageExperts> :member <mailto:cygri@example.net> .
#
# SPARQL is ok with this?