Question: Which disease has the highest maximal incubation period in humans.
Paraphrase: Which human disease has the longest incubation time?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q12136 . ?ent wdt:P3487 ?obj } ORDER BY DESC(?obj)LIMIT 5 
Answer: Nipah Virus Infection, obsolete adenovirus infectious disease, Crimean-Congo hemorrhagic fever, chikungunya, erysipelas