I just watched The Time of the Doctor and while the whole Silence wanting to kill the the Doctor thing now makes total sense, one thing doesn't add up. Dorium Maldovar said:
On the fields of Trenzalore at the fall of the 11th, when no creature can speak falsely or fail to answer, a question will be asked
So how was the Doctor able to not answer the question? The prophecy said that it will be impossible to fail to answer a question, yet the Doctor spends more than 300 years on Trenzalore in the same place ignoring the Time Lords. So was Maldovar just trying to sound all poetic or did I miss something?