How many {used by} are for {Transport Layer Security} ?
How many protocols are used by Transport Layer Security?
How many used by are for Transport Layer Security ?
SELECT ( COUNT ( ?g ) AS ?b ) { resource:Transport_Layer_Security property:used_by ?g }
SELECT (COUNT(?obj) AS ?objs ) {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q206494> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1535> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
} 

SELECT (COUNT(?obj) AS ?value ) { wd:Q206494 wdt:P1535 ?obj }
5