How many {genetic association} are to/by {Parkinson disease} ?
How many genetic markers are associated with Parkinson's disease?
What is the number of Parkinson's disease genetic associations?
SELECT ( COUNT ( ?w ) AS ?c ) { ?w property:genetic_association resource:Parkinson's_disease }
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/P2293> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> http://wikidata.dbpedia.org/resource/Q11085 .
} 

SELECT (COUNT(?sub) AS ?value ) { ?sub wdt:P2293 wd:Q11085 }
26