Tell me the longest-distance sport in which Rudolf Caracciola is champion.
select ?ent where { ?ent wdt:P31 wd:Q16510064 . ?ent wdt:P3157 ?obj . ?ent wdt:P1346 wd:Q57365 } ORDER BY DESC(?obj)LIMIT 5 
sporting event: Q16510064 rudolf caracciola: Q57365