What is the average number of House of Representatives seats had an abbreviation of d66?
CREATE TABLE table_name_52 (house_of_rep_seats INTEGER, abbr VARCHAR)
SELECT AVG(house_of_rep_seats) FROM table_name_52 WHERE abbr = "d66"
### Context: CREATE TABLE table_name_52 (house_of_rep_seats INTEGER, abbr VARCHAR) ### Question: What is the average number of House of Representatives seats had an abbreviation of d66? ### Answer: SELECT AVG(house_of_rep_seats) FROM table_name_52 WHERE abbr = "d66"