Who had the most votes on the Amendment to the Constitution of Ireland?
select ?ent where { ?ent wdt:P31 wd:Q54086790 . ?ent wdt:P1697 ?obj . ?ent wdt:P31 wd:Q467578 } ORDER BY DESC(?obj)LIMIT 5 
referendums in ireland: Q54086790 amendments to the constitution of ireland: Q467578