How many {destination point} are for {Voyager 2} ?
Voyager 2 has how many destinations?
How many destinations does Voyager 2 have?
SELECT ( COUNT ( ?i ) AS ?f ) { resource:Voyager_2 property:destination_point ?i }
SELECT (COUNT(?obj) AS ?objs ) {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q48475> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1444> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
} 

SELECT (COUNT(?obj) AS ?value ) { wd:Q48475 wdt:P1444 ?obj }
5