Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_43 (opponent VARCHAR, record VARCHAR, location VARCHAR, method VARCHAR)

### Question ###
What is Opponent, when Location is "Tokyo , Japan", when Method is "Decision (unanimous)", and when Record is "4-1"?

### Accurate SQL ###

SELECT opponent FROM table_name_43 WHERE location = "tokyo , japan" AND method = "decision (unanimous)" AND record = "4-1"