Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_2820584_3 (partner VARCHAR, year VARCHAR)
### Question:
How many different partners played in the finale in 1973?
### Answer:
SELECT COUNT(partner) FROM table_2820584_3 WHERE year = 1973