Which memorial cemetery has the largest number of graves out of all memorial cemeteries?
select ?ent where { ?ent wdt:P31 wd:Q2532223 . ?ent wdt:P2351 ?obj . ?ent wdt:P31 wd:Q2532223 } ORDER BY DESC(?obj)LIMIT 5 
memorial cemetery: Q2532223 memorial cemetery: Q2532223