Table: columbia_steamboats
Columns: name
type
year_built
where_built
initial_owners

Question: Where was something built earlier than 1858?
SQL: SELECT "where_built" FROM columbia_steamboats WHERE "year_built" < 1858

Question: What was built in 1857?
SQL: SELECT "name" FROM columbia_steamboats WHERE "year_built" = 1857

Question: Who were the initial owners of Wasco in 1858?
SQL: SELECT "initial_owners" FROM columbia_steamboats WHERE "year_built" = 1858 AND "name" = 'wasco'

Question: What was the type of boat built in Port Blakeley
SQL: SELECT "type" FROM columbia_steamboats WHERE "where_built" = 'port blakeley'