query: #title: Inverted month/day on items with 2 dates
  # Complex constraint from [[Property talk:P570]]
  # 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 *
  {
      ?item wdt:P570 ?d1 ; wdt:P570 ?d2 .
      FILTER( 
            ?d1 != ?d2 
             && MONTH(?d1) = DAY(?d2) 
             && DAY(?d1) = MONTH(?d2) 
             && YEAR(?d1) = YEAR(?d2) 
             && DAY(?d1) != DAY(?d2) 
            )
  }
  LIMIT 10