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_83 ( heat_points INTEGER, date VARCHAR, result VARCHAR, game VARCHAR )

### Question ###
What is the average Heat Points, when Result is 'Loss', when Game is greater than 72, and when Date is 'April 21'?

### Accurate SQL ###

SELECT AVG(heat_points) FROM table_name_83 WHERE result = "loss" AND game > 72 AND date = "april 21"