How many {fabrication method} are to/by {illustration} ?
Illustrations use how many fabrication methods?
How many fabrication methods are used by illustrations?
SELECT ( COUNT ( ?w ) AS ?e ) { ?w property:fabrication_method resource:illustration }
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/P2079> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> http://wikidata.dbpedia.org/resource/Q178659 .
} 

SELECT (COUNT(?sub) AS ?value ) { ?sub wdt:P2079 wd:Q178659 }
71