What was the maximum average of the episode with a Chinese title b?
CREATE TABLE table_22886 (
    "Rank" real,
    "English title" text,
    "Chinese title" text,
    "Average" real,
    "Peak" real,
    "Premiere" real,
    "Finale" real,
    "HK viewers" text
)
SELECT MAX("Average") FROM table_22886 WHERE "Chinese title" = '古靈精探B'
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 was the maximum average of the episode with a Chinese title b? ### Input: CREATE TABLE table_22886 (
    "Rank" real,
    "English title" text,
    "Chinese title" text,
    "Average" real,
    "Peak" real,
    "Premiere" real,
    "Finale" real,
    "HK viewers" text
) ### Response: SELECT MAX("Average") FROM table_22886 WHERE "Chinese title" = '古靈精探B'