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_99 (total INTEGER, silver VARCHAR, nation VARCHAR, bronze VARCHAR, gold VARCHAR)

### Question ###
what is the average total when bronze is more than 0, gold is 0, the nation is united states (usa) and silver is 0?

### Accurate SQL ###

SELECT AVG(total) FROM table_name_99 WHERE bronze > 0 AND gold = 0 AND nation = "united states (usa)" AND silver < 0