What is the year of appearance for the Prince Albert Raiders?
CREATE TABLE table_21893 (
    "Tournament Appearances" real,
    "Team" text,
    "League" text,
    "Wins" real,
    "Final Losses" real,
    "Semi-Final Losses" real,
    "Fourth-Place*" real,
    "Final Win %" text,
    "Years of appearance" text
)
SELECT "Years of appearance" FROM table_21893 WHERE "Team" = 'Prince Albert Raiders'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the year of appearance for the Prince Albert Raiders? ### Input: CREATE TABLE table_21893 (
    "Tournament Appearances" real,
    "Team" text,
    "League" text,
    "Wins" real,
    "Final Losses" real,
    "Semi-Final Losses" real,
    "Fourth-Place*" real,
    "Final Win %" text,
    "Years of appearance" text
) ### Response: SELECT "Years of appearance" FROM table_21893 WHERE "Team" = 'Prince Albert Raiders'