How many {instance of} are to/by {Northern Hemisphere} ?
What number of Norther Hemispheres are there?
How many instances of the Northern Hemisphere exist?
SELECT ( COUNT ( ?f ) AS ?r ) { ?f rdf:type ontology:Northern_Hemisphere }
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/P31> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> http://wikidata.dbpedia.org/resource/Q39061 .
} 

SELECT (COUNT(?sub) AS ?value ) { ?sub wdt:P31 wd:Q39061 }
0