CREATE TABLE table_name_8 (bore VARCHAR, cyl VARCHAR, name VARCHAR)

What is the bore for a 9-cyl radial on a 9 AD?
SELECT bore FROM table_name_8 WHERE cyl = "9-cyl radial" AND name = "9 ad"
SELECT "bore" FROM "table_name_8" WHERE "9 ad" = "name" AND "9-cyl radial" = "cyl"