CREATE TABLE table_name_38 (opponent VARCHAR2, rules VARCHAR2, round VARCHAR2, time VARCHAR2)

Which Opponent has a Round of 3, a Time of n/a, and a Rules of n/a?
SELECT opponent FROM table_name_38 WHERE round = "3" AND time = "n/a" AND rules = "n/a"
SELECT "opponent" FROM "table_name_38" WHERE "3" = "round" AND "n/a" = "rules" AND "n/a" = "time"