How many {instance of} are to/by {instruction set architecture} ?
For a set of architecture, how many instances of intruction are there?
how much instance are in intruction set architecture?
SELECT ( COUNT ( ?c ) AS ?p ) { ?c rdf:type ontology:instruction_set_architecture }
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/Q272683 .
} 

SELECT (COUNT(?sub) AS ?value ) { ?sub wdt:P31 wd:Q272683 }
66