Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_49642 ( "Governorate" text, "Seats 2010" real, "Seats 2005" real, "In/de-creased by" real, "Percentage in/de-crease" text )

### Question ###
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?

### Accurate SQL ###

SELECT SUM("Seats 2005") FROM table_49642 WHERE "Percentage in/de-crease" = '50.0%' AND "Governorate" = 'dhi qar governorate' AND "In/de-creased by" > '6'