Table: railway_info_2
Columns: livery
locomotive_type
wheel_arrangement
builder
year_built

Question: What is the livery of the steam locomotive built after 1950 with a wheel arrangement of 2-6-2?
SQL: SELECT "livery" FROM railway_info_2 WHERE "locomotive_type" = 'steam' AND "year_built" > 1950 AND "wheel_arrangement" = '2-6-2'

Question: What livery belongs to the steam Locomotive type builder that was building before 1989?
SQL: SELECT "livery" FROM railway_info_2 WHERE "year_built" < 1989 AND "locomotive_type" = 'steam'