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_name_77 (visitor VARCHAR, home VARCHAR, date VARCHAR)
### Question:
What is the name of the visitor team who played home team Chicago Black Hawks on March 20?
### Answer:
SELECT visitor FROM table_name_77 WHERE home = "chicago black hawks" AND date = "march 20"