CREATE TABLE table_name_43 (opponent VARCHAR, record VARCHAR, location VARCHAR, method VARCHAR)

What is Opponent, when Location is 'Tokyo , Japan', when Method is 'Decision (unanimous)', and when Record is '4-1'?
SELECT opponent FROM table_name_43 WHERE location = "tokyo , japan" AND method = "decision (unanimous)" AND record = "4-1"
SELECT "opponent" FROM "table_name_43" WHERE "4-1" = "record" AND "decision (unanimous)" = "method" AND "location" = "tokyo , japan"