query: #title: Inverted month/day on items with 2 dates
  # Complex constraint from [[Property talk:P569]]
  # Items with 2 dates, day of the first date = month number of the second date, month of of first = day of the second. To fix, set on to preferred or deprecated [[Help:Ranking|rank]]
  SELECT *
    WHERE {
      ?item wdt:P569 ?d1 ; wdt:P569 ?d2 .
      FILTER( 
        ?d1 != ?d2 
        && MONTH(?d1) = DAY(?d2) 
        && DAY(?d1) = MONTH(?d2) 
        && YEAR(?d1) = YEAR(?d2) 
        && DAY(?d1) != DAY(?d2) 
        )
    }
    LIMIT 10