What is {main topic} of {Greek alphabet}, that has {cases} is {accusative case} ?
What is the main topic of  the Greek alphabet, that has the cases which is an accusative case?
SELECT ?answer WHERE { wd:Q8216 wdt:P1269 ?answer . ?answer wdt:P2989 wd:Q146078}
SELECT ?answer WHERE { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q8216> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1269>. ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?answer. ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P2989> . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q146078> . }
What is the most important subject of the Greek alphabet, that has the cases which is an accusative case?