Table schema:
CREATE TABLE table_name_73 (rank INTEGER, silver VARCHAR, nation VARCHAR, bronze VARCHAR, gold VARCHAR)

Question: What is the rank when bronze was more than 0, gold more than 1, Nation is japan, and silver less than 0?
SQL: SELECT AVG(rank) FROM table_name_73 WHERE bronze > 0 AND gold > 1 AND nation = "japan" AND silver < 0