How many {illustrator} are to/by {Hirohiko Araki} ?
Hirohika Araki made how many illustrations?
How many illustrations are by Hirohika Araki ?
SELECT ( COUNT ( ?x ) AS ?f ) { ?x property:illustrator resource:Hirohiko_Araki }
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/P110> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> http://wikidata.dbpedia.org/resource/Q719354 .
} 

SELECT (COUNT(?sub) AS ?value ) { ?sub wdt:P110 wd:Q719354 }
2