CREATE TABLE table_name_55 (country VARCHAR, notes VARCHAR, time VARCHAR)

What country has sa/b as the notes, and a time of 5:51.30?
SELECT country FROM table_name_55 WHERE notes = "sa/b" AND time = "5:51.30"
SELECT "country" FROM "table_name_55" WHERE "5:51.30" = "time" AND "notes" = "sa/b"