How many {distribution} are to/by {Secure Digital card} ?
What is the amount of distribution done by secure digital card?
how much distribution is done by secure digital card?
SELECT ( COUNT ( ?c ) AS ?p ) { ?c property:distribution_format resource:Secure_Digital_card }
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/P437> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> http://wikidata.dbpedia.org/resource/Q466977 .
} 

SELECT (COUNT(?sub) AS ?value ) { ?sub wdt:P437 wd:Q466977 }
9