Question: Which military cemetery has the smallest number of graves with UNDEFINED_LABEL?
Paraphrase: Which military cemetery has the smallest number of UNDEFINED_LABEL tombs?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q1707610 . ?ent wdt:P2351 ?obj . ?ent wdt:P1791 wd:Q29949596} ORDER BY ASC(?obj)LIMIT 5