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_73 (mark VARCHAR, group VARCHAR, nationality VARCHAR)
### Question:
What is the mark for Grenada in group A?
### Answer:
SELECT mark FROM table_name_73 WHERE group = "a" AND nationality = "grenada"