user: Question: When the apparent magnitude is 10.5, what is the right ascension?
Columns: ['NGC number', 'Object type', 'Constellation', 'Right ascension ( J2000 )', 'Declination ( J2000 )', 'Apparent magnitude']
Types: ['real', 'text', 'text', 'text', 'text', 'real']
Sample row: [5001.0, 'Spiral galaxy', 'Ursa Major', '13h09m33.5s', '°29′38″', 14.6]
SQL:

assistant: SELECT "Right ascension ( J2000 )" FROM "Table" WHERE "Apparent magnitude" = 10.5;