How many {excavation director} are for {Pompeii} ?
Which is the number of excavation directors in Pompeii?
How many excavation directors are in the Pompeii} ?
SELECT ( COUNT ( ?k ) AS ?s ) { resource:Pompeii property:director_of_archaeological_fieldwork ?k }
SELECT (COUNT(?obj) AS ?objs ) {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q43332> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P4345> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
} 

SELECT (COUNT(?obj) AS ?value ) { wd:Q43332 wdt:P4345 ?obj }
30