query: #title: Error in prefix
  # Complex constraint from [[Property talk:P6262]]
  # Example : the value ''de.memory-alpha.wikia:Technobabble'' is wrong
  SELECT ?item ?value ?prefix {
      ?item wdt:P6262 ?value .
      BIND (STRBEFORE(?value, ":") AS ?prefix)
      FILTER (CONTAINS(?prefix, "wikia"))
  }