I want to know the answer to the following question:
Where did the semi finals take place before then?
All the background I'm provided with is that "In the period between this first decade and the reopening of Wembley, semi-finals were played at high-capacity neutral venues around England; usually the home grounds of teams not involved in that semi-final, chosen to be roughly equidistant between the two teams for fairness of travel.". Is that enough to answer the question?