user: Question: What was the maximum average of the episode with a Chinese title 古靈精探B?
Columns: ['Rank', 'English title', 'Chinese title', 'Average', 'Peak', 'Premiere', 'Finale', 'HK viewers']
Types: ['real', 'text', 'text', 'real', 'real', 'real', 'real', 'text']
Sample row: [1.0, 'Beyond the Realm of Conscience', '宮心計', 35.0, 50.0, 33.0, 35.0, '2.26 million']
SQL:

assistant: SELECT MAX("Average") FROM "Table" WHERE "Chinese title" = '古靈精探B';