How many {translator} are for {The Communist Manifesto} ?
Who translated The Communist Manifesto?
Who's the translator for The Communist Manifesto?
SELECT ( COUNT ( ?i ) AS ?e ) { resource:The_Communist_Manifesto property:translator ?i }
SELECT (COUNT(?obj) AS ?objs ) {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q40591> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P655> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
} 

SELECT (COUNT(?obj) AS ?value ) { wd:Q40591 wdt:P655 ?obj }
7