How many {has conjugation class} are for {Latin} ?
How many Latin conjugations are there?
How many conjugations are there in Latin?
SELECT ( COUNT ( ?g ) AS ?m ) { resource:Latin property:has_conjugation_class ?g }
SELECT (COUNT(?obj) AS ?objs ) {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q397> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P5206> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
} 

SELECT (COUNT(?obj) AS ?value ) { wd:Q397 wdt:P5206 ?obj }
4