which unit of time with the highest wikidata time precision whose measured physical quantity is time?
select ?ent where { ?ent wdt:P31 wd:Q1790144 . ?ent wdt:P2803 ?obj . ?ent wdt:P111 wd:Q11471 } ORDER BY DESC(?obj)LIMIT 5 
unit of time: Q1790144 time: Q11471