How many {employer} are for {Edward Snowden} ?
Edward Snowden worked for what number of employers?
How many employers are there for Edward Snowden?
SELECT ( COUNT ( ?v ) AS ?a ) { resource:Edward_Snowden property:employer ?v }
SELECT (COUNT(?obj) AS ?objs ) {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q13424289> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P108> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
} 

SELECT (COUNT(?obj) AS ?value ) { wd:Q13424289 wdt:P108 ?obj }
6