This is not their mistake but our challenge, to which we need to rise.
"This is a significant challenge to which we expect the BBC to make a significant response".
That presents some serious challenges, to which I will return in a moment.
But they were posing a challenge to which the only answer was a better option: something that would work.
She inherits a bewildering array of political and economic challenges, to which she brings limited experience and an opaque outlook.
After the interval came Bruckner's Seventh, a challenge to which all orchestral departments rose with immense skill and devotion.
We can all agree with the prime minister that an ageing population and technological advances create new challenges to which the NHS needs to respond.
How to get traction on this big, unanswered question in medicine is the challenge to which Jo Marchant sets herself in Cure.
Financing support of this nature in straitened times presented a challenge to which the Kony2012 initiative's fundraising might have offered a "perfect" solution, she said.
But working together, there is no challenge to which we are not equal, no obstacle that we cannot overcome, no aspiration so high that it cannot be achieved.
