CREATE TABLE table_name_15 (races VARCHAR, position VARCHAR, points VARCHAR, wins VARCHAR)

What races have n/a Points, 0 Wins, and 6th Position entries?
SELECT races FROM table_name_15 WHERE points = "n/a" AND wins = "0" AND position = "6th"
SELECT "races" FROM "table_name_15" WHERE "0" = "wins" AND "6th" = "position" AND "n/a" = "points"