CREATE TABLE table_47280 ("Date" CLOB, "Round" CLOB, "Opponents" CLOB, "H / A" CLOB, "Result F \\u2013 A" CLOB, "Scorers" CLOB, "Attendance" FLOAT)

What is the H/A in the semi-final round where oldham athletic were the opponents?
SELECT "H / A" FROM table_47280 WHERE "Opponents" = 'oldham athletic' AND "Round" = 'semi-final'
SELECT "H / A" FROM "table_47280" WHERE "Opponents" = 'oldham athletic' AND "Round" = 'semi-final'