What is the name of the infectious disease that has minimal prevalence and is a subclass of viral hepatitis?
select ?ent where { ?ent wdt:P31 wd:Q18123741 . ?ent wdt:P1193 ?obj . ?ent wdt:P279 wd:Q1983841} ORDER BY ASC(?obj)LIMIT 5 
infectious disease: Q18123741 viral hepatitis: Q1983841