What is the {island nation} with the {MAX(marriageable age)} ?
which island nation had the highest age of marriage?
What island nation  has highest marriage age ?
SELECT ?v WHERE { ?v property:marriageable_age ?d . ?v rdf:type ontology:island_nation }
select ?ent where {
?ent <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q112099>.
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?ent .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P3000>.
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .}
ORDER BY DESC(?obj)
LIMIT 5
select ?ent where { ?ent wdt:P31 wd:Q112099 . ?ent wdt:P3000 ?obj } ORDER BY DESC(?obj)LIMIT 5 
Singapore Tuvalu Samoa Vanuatu Papua New Guinea