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_83 (round VARCHAR, h___a VARCHAR, opponents VARCHAR)
### Question:
Rich round has an H/A of A and the opponent Sheffield United?
### Answer:
SELECT round FROM table_name_83 WHERE h___a = "a" AND opponents = "sheffield united"