Question: what is the date for traction type Electric with Calgary location?
SQL: SELECT "Date (From)" FROM "2-16927321-1" WHERE "Traction Type" = 'Electric' AND "Location" = 'Calgary';

Question: Which date has date started from 30 Sep 1913?
SQL: SELECT "Date (To)" FROM "2-16927321-1" WHERE "Date (From)" = '30 Sep 1913';