Which antiparticle of the antineutron has the longest mean lifetime ?
select ?ent where { ?ent wdt:P31 wd:Q22675015 . ?ent wdt:P2645 ?obj . ?ent wdt:P2152 wd:Q156530 } ORDER BY DESC(?obj)LIMIT 5 
type of quantum particle: Q22675015 antineutron: Q156530