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_78 ( session VARCHAR, discipline VARCHAR, event VARCHAR )

### Question ###
The 1977 Japanese Grand Prix in the open wheel discipline has what session?

### Accurate SQL ###

SELECT session FROM table_name_78 WHERE discipline = "open wheel" AND event = "1977 japanese grand prix"