Movies with the longest duration between the original and the sequel

sequels.sparql

SELECT ?original ?sequel ?originalLabel ?sequelLabel (min(?originalDates) AS ?originalDate) (min(?sequelDates) AS ?sequelDate)
WHERE
{
  ?sequel wdt:P155 ?original .
  ?original wdt:P31/wdt:P279* wd:Q11424 .
  ?sequel wdt:P31/wdt:P279* wd:Q11424 .
  ?original wdt:P577 ?originalDates .
  ?sequel wdt:P577 ?sequelDates .
  ?original rdfs:label ?originalLabel .
  ?sequel rdfs:label ?sequelLabel
  FILTER NOT EXISTS { ?original wdt:P155 ?prequel }  
  FILTER(LANG(?originalLabel) = "en")
  FILTER(LANG(?sequelLabel) = "en")
  FILTER(datatype(?originalDates) = xsd:dateTime)
  FILTER(datatype(?sequelDates) = xsd:dateTime)
}
GROUP BY ?original ?originalLabel ?sequel ?sequelLabel
ORDER BY (YEAR(?originalDate) - YEAR(?sequelDate))
LIMIT 100