Read this: In 2003 the FA took the decision to permanently use the new Wembley for semi-finals to recoup debts in financing the new stadium. This was controversial, with the move seen as both unfair to fans of teams located far from London, as well as taking some of the prestige away from a Wembley final. In defending the move, the FA has also cited the extra capacity Wembley offers, although the 2013 fixture between Millwall and Wigan led to the unprecedented step of placing 6,000 tickets on sale to neutral fans after the game failed to sell out. A fan poll by The Guardian in 2013 found 86% opposition to Wembley semi-finals.
Now answer this question, if there is an answer (If it cannot be answered, return "unanswerable"): Why is it held at Webly Stadium?
to recoup debts in financing the new stadium.