user: Question: Which NGC number has an Object type of Open cluster, and a Right ascension (J2000) of 06h01m06s?
Columns: ['NGC number', 'Object type', 'Constellation', 'Right ascension ( J2000 )', 'Declination ( J2000 )']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [2129.0, 'Open cluster', 'Gemini', '06h01m06s', '°19′20″']
SQL:

assistant: SELECT "NGC number" FROM "Table" WHERE "Object type" = 'Open cluster' AND "Right ascension ( J2000 )" = '06h01m06s';