SELECT
?a ?p ?s ?t ?x ?y ?l ?b ?c ?d
WHERE {
?a place ?p.
?a fk_produced_signal ?s.
?a type ?t.
?s fk_published_as ?x.
?s type ?y.
?s label ?l.
?x title ?b.
?x type ?c.
?x label ?d.
}