What episode was the last appearance of the character, rikki sandoval?
CREATE TABLE table_11240028_3 (last_appearance VARCHAR, character VARCHAR)
SELECT last_appearance FROM table_11240028_3 WHERE character = "Rikki Sandoval"
### Context: CREATE TABLE table_11240028_3 (last_appearance VARCHAR, character VARCHAR) ### Question: What episode was the last appearance of the character, rikki sandoval? ### Answer: SELECT last_appearance FROM table_11240028_3 WHERE character = "Rikki Sandoval"