<question>: What is the area (in km2) for theewaterskloof, whose population in 2011 was less than 108,790? <context>: CREATE TABLE table_name_67 (area__km_2__ INTEGER, name VARCHAR, population__2011_ VARCHAR)
SELECT SUM(area__km_2__) FROM table_name_67 WHERE name = "theewaterskloof" AND population__2011_ < 108 OFFSET 790