user: Question: WHat is tHe lowest attendance wHen tHe H/A is H in tHe Semi-finals Second leg?
Columns: ['Date', 'Round', 'Opponents', 'H / A', 'Result F – A', 'Scorers', 'Attendance']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['19 September 1990', 'Round 1 First leg', 'Pécsi Munkás', 'H', '2 – 0', "Blackmore 9', Webb 17'", 28411.0]
SQL:

assistant: SELECT MIN("Attendance") FROM "Table" WHERE "H / A" = 'H' AND "Round" = 'Semi-finals Second leg';