Question: How many instance the taxon has the highest observed lifespan?
Paraphrase: The taxon has the highest observed lifespan in how many instance?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q16521 . ?ent wdt:P4214 ?obj . ?ent wdt:P31 wd:Q16521} ORDER BY ASC(?obj)LIMIT 5 
Answer: Daphnia pulicaria, Cardiocondyla obscurior, Bicyclus anynana, Elliot's short-tailed shrew, Northern Short-tailed Shrew