How many {performer} are to/by {Jimi Hendrix} ?
Jimi Hendrix played how many live shows?
how many performances are by jimi hendrix?
SELECT ( COUNT ( ?q ) AS ?m ) { ?q property:performer resource:Jimi_Hendrix }
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/P175> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> http://wikidata.dbpedia.org/resource/Q5928 .
} 

SELECT (COUNT(?sub) AS ?value ) { ?sub wdt:P175 wd:Q5928 }
96