Table schema:
CREATE TABLE table_name_14 (seats_2005 INTEGER, in_de_creased_by VARCHAR, percentage_in_de_crease VARCHAR, governorate VARCHAR)

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?
SQL: SELECT SUM(seats_2005) FROM table_name_14 WHERE percentage_in_de_crease = "50.0%" AND governorate = "dhi qar governorate" AND in_de_creased_by > 6