CREATE TABLE table_68675 ("Year" FLOAT, "Total Region" FLOAT, "Mackay" FLOAT, "Pioneer" FLOAT, "Mirani" FLOAT, "Sarina" FLOAT)

What is the lowest Pioneer population in 1966 with a Sarina population greater than 4,611?
SELECT MIN("Pioneer") FROM table_68675 WHERE "Year" = '1966' AND "Sarina" > '4,611'
SELECT MIN("Pioneer") FROM "table_68675" WHERE "Sarina" > '4,611' AND "Year" = '1966'