question: what is the average population when the regional county municipality is le domaine-du-roy, the type is m and the region is less than 2?
answer: SELECT AVG(population) FROM table_name_19 WHERE regional_county_municipality = "le domaine-du-roy" AND type = "m" AND region < 2
context: CREATE TABLE table_name_19 (population INTEGER, region VARCHAR, regional_county_municipality VARCHAR, type VARCHAR)