Which civil parish with people from Castle Bromwich has the highest average age?
select ?ent where { ?ent wdt:P31 wd:Q1115575 . ?ent wdt:P4442 ?obj . ?ent wdt:P1792 wd:Q8729948 } ORDER BY DESC(?obj)LIMIT 5 
civil parish: Q1115575 category:people from castle bromwich: Q8729948