user: Question: What is the average NGC number of everything with a Right ascension (J2000) of 05h33m30s?
Columns: ['NGC number', 'Object type', 'Constellation', 'Right ascension ( J2000 )', 'Declination ( J2000 )']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [2014.0, 'Association of stars', 'Dorado', '05h32m24s', '°41′']
SQL:

assistant: SELECT AVG("NGC number") FROM "Table" WHERE "Right ascension ( J2000 )" = '05h33m30s';