Table: train_schedule
Columns: train_number
train_name
origin
destination
service
route_via

Question: How many trains are there for the route via trivandrum, ernakulam, newdelhi?
SQL: SELECT COUNT("train_number") FROM train_schedule WHERE "route_via" = 'Trivandrum, Ernakulam, NewDelhi'

Question: What is the route for the destination of  guruvayur?
SQL: SELECT "route_via" FROM train_schedule WHERE "destination" = 'Guruvayur'

Question: How many route/via's are there for the ernad express?
SQL: SELECT COUNT("route_via") FROM train_schedule WHERE "train_name" = 'Ernad Express'

Question: What is the destination of the route kulitthurai,neyyattinkara?
SQL: SELECT "destination" FROM train_schedule WHERE "route_via" = 'Kulitthurai,Neyyattinkara'

Question: What is the train number for the train name island express with a destination of kanniyakumari?
SQL: SELECT "train_number" FROM train_schedule WHERE "train_name" = 'Island Express' AND "destination" = 'Kanniyakumari'