Table: railway_vehicles_7
Columns: number
name
builder
type
date
works_number

Question: What is the date for Orangeville?
SQL: SELECT "date" FROM railway_vehicles_7 WHERE "name" = 'orangeville'

Question: Who is the builder with a works number of 2534?
SQL: SELECT "builder" FROM railway_vehicles_7 WHERE "works_number" = '2534'

Question: Who is the name with a works number of 809?
SQL: SELECT "name" FROM railway_vehicles_7 WHERE "works_number" = '809'

Question: In early 1873, Owen sound had what works number?
SQL: SELECT "works_number" FROM railway_vehicles_7 WHERE "date" = 'early 1873' AND "name" = 'owen sound'

Question: What was the name for the locomotive with a type of 2-8-0 and a number of 20?
SQL: SELECT "name" FROM railway_vehicles_7 WHERE "type" = '2-8-0' AND "number" = 20