What is the voting round with the  maximum number of abstentions whose office contested is State Vice Governor of Brazil?
select ?ent where { ?ent wdt:P31 wd:Q24097670 . ?ent wdt:P5043 ?obj . ?ent wdt:P541 wd:Q51334165 } ORDER BY DESC(?obj)LIMIT 5 
voting round: Q24097670 state vice governor of brazil: Q51334165