user: Question: What is the frequency of the train named Garib Nwaz Exp?
Columns: ['Train Number', 'Train Name', 'Origin', 'Destination', 'Frequency (inbound/outbound)']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['2397/98', 'Mahabodhi Express', 'Gaya', 'New Delhi', 'Daily']
SQL:

assistant: SELECT "Frequency (inbound/outbound)" FROM "Table" WHERE "Train Name" = 'Garib Nwaz Exp';