Question: How many shows belong to the networks one of whose sister station is BBC News?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT COUNT(?uri) WHERE { ?x prop:sisterNames <http://dbpedia.org/resource/BBC_News_(TV_channel)> . ?uri onto:network ?x  . ?uri rdf:type onto:TelevisionShow}