What nominative-accusative dead language has the least number of speakers?
select ?ent where { ?ent wdt:P31 wd:Q45762 . ?ent wdt:P1098 ?obj . ?ent wdt:P4132 wd:Q178435} ORDER BY ASC(?obj)LIMIT 5 
dead language: Q45762 nominative–accusative language: Q178435