user: Question: How many route/via's are there for the Ernad Express?
Columns: ['Train number', 'Train name', 'Origin', 'Destination', 'Service', 'Route/Via.']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [16724.0, 'Ananthapuri Express', 'Trivandrum', 'Chennai', 'Daily', 'Nagercoil,Madurai,Tiruchi']
SQL:

assistant: SELECT COUNT("Route/Via.") FROM "Table" WHERE "Train name" = 'Ernad Express';