When semi final (2nd leg) is the round what is the highest attendance?
CREATE TABLE table_28181401_4 (attendance INTEGER, round VARCHAR)
SELECT MAX(attendance) FROM table_28181401_4 WHERE round = "Semi Final (2nd leg)"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_28181401_4 (attendance INTEGER, round VARCHAR) Question: When semi final (2nd leg) is the round what is the highest attendance? [/INST] SELECT MAX(attendance) FROM table_28181401_4 WHERE round = "Semi Final (2nd leg)" </s>