Which earthquake had the highest magnitude on the Mercalli intensity scale with a scale of 11?
select ?ent where { ?ent wdt:P31 wd:Q7944 . ?ent wdt:P2527 ?obj . ?ent wdt:P2784 wd:Q23925708 } ORDER BY DESC(?obj)LIMIT 5 
earthquake: Q7944 mercalli scale xi: Q23925708