How many {original network} are to/by {Discovery Channel} ?
The Discovery Channel owns how many original networks?
What is the number of original networks owned by the Discovery Channel?
SELECT ( COUNT ( ?f ) AS ?s ) { ?f property:original_broadcaster resource:Discovery_Channel }
SELECT (COUNT(?sub) AS ?subs ) {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?sub .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P449> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> http://wikidata.dbpedia.org/resource/Q43404 .
} 

SELECT (COUNT(?sub) AS ?value ) { ?sub wdt:P449 wd:Q43404 }
176