Instruct: How many Seats 2005 has a Percentage in/de-crease of 50.0%, and a Governorate of dhi qar governorate, and a In/de-creased by larger than 6?
Output: SELECT SUM Seats 2005 FROM table WHERE Percentage in/de-crease = 50.0% AND Governorate = dhi qar governorate AND In/de-creased by > 6