user: Question: What is the name of the constellation that has a NGC number smaller tha 5457?
Columns: ['NGC number', 'Object type', 'Constellation', 'Right ascension ( J2000 )', 'Declination ( J2000 )', 'Apparent magnitude']
Types: ['real', 'text', 'text', 'text', 'text', 'real']
Sample row: [5408.0, 'Irregular galaxy', 'Centaurus', '14h03m21.0s', '°22′44″', 14.0]
SQL:

assistant: SELECT "Constellation" FROM "Table" WHERE "NGC number" < 5457.0;