query: #title: frequent pattern without item
  # Complex constraint from [[Property talk:P1030]]
  # create an item for the light characteristic. Ensure patterns are normalized before creating items for them. "W" might be missing.
  SELECT (SAMPLE(?item) as ?item) ?value (COUNT(DISTINCT ?item) as ?count) 
  WHERE
  { ?item wdt:P1030 ?value . 
    MINUS { ?pattern wdt:P1030 ?value ; wdt:P31 wd:Q1738955 } . FILTER(!REGEX(?value, "FI"))   
  } 
  GROUP BY ?value
  ORDER BY DESC(?count)
  LIMIT 20