Question: What is number of the train that originated in Secunderabad Junction?
SQL: SELECT "Train No." FROM "2-12095519-1" WHERE "Origin" = 'Secunderabad Junction';

Question: From where did the train that arrived in the Anand Vihar Terminal originate?
SQL: SELECT "Origin" FROM "2-12095519-1" WHERE "Destination" = 'Anand Vihar Terminal';

Question: From where did Train No. 15929/30 originate?
SQL: SELECT "Origin" FROM "2-12095519-1" WHERE "Train No." = '15929/30';

Question: What is the frequency of the train to Bangalore?
SQL: SELECT "Frequency" FROM "2-12095519-1" WHERE "Destination" = 'Bangalore';

Question: What is the frequency of the Chennai Egmore Dibrugarh Express to Dibrugarh?
SQL: SELECT "Frequency" FROM "2-12095519-1" WHERE "Destination" = 'Dibrugarh' AND "Train Name" = 'Chennai Egmore Dibrugarh Express';