Table: train_services
Columns: dibrugarh
kanyakumari
vivek_express_15905_15906
indian_railways
4286km
55
weekly
82_30_hrs_3_5_days

Question: How long does  the 2579km route take?
SQL: SELECT "82_30_hrs_3_5_days" FROM train_services WHERE "4286km" = '2579km'

Question: What is the name of the only route that runs to bhavnagar?
SQL: SELECT "vivek_express_15905_15906" FROM train_services WHERE "kanyakumari" = 'Bhavnagar'