How many {screenwriter} are for {Raging Bull} ?
For Raging Bull, how many screen writers were there?
How many screen writers are there for Raging Bull?
SELECT ( COUNT ( ?e ) AS ?l ) { resource:Raging_Bull property:screenwriter ?e }
SELECT (COUNT(?obj) AS ?objs ) {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q220780> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P58> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
} 

SELECT (COUNT(?obj) AS ?value ) { wd:Q220780 wdt:P58 ?obj }
2