Question: Who is associated  with the musical artists from Africa '70 (band) and Tony Allen ?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT ?uri WHERE { ?uri onto:associatedMusicalArtist <http://dbpedia.org/resource/Africa_'70_(band)> . ?uri onto:associatedMusicalArtist <http://dbpedia.org/resource/Tony_Allen_(musician)> . ?uri rdf:type onto:MusicalArtist}