What round has hereford united as the opponent?
CREATE TABLE table_name_50 (round VARCHAR, opponent VARCHAR)
SELECT round FROM table_name_50 WHERE opponent = "hereford united"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_50 (round VARCHAR, opponent VARCHAR) Question: What round has hereford united as the opponent? [/INST] SELECT round FROM table_name_50 WHERE opponent = "hereford united" </s>