As for whether the Games can mark a turning point in the fortunes of some of Britain's poorest areas, the verdict on that won't be returned until long after the athletes have gone and the world's eyes have again turned away.
The coincidence could mark a turning point in attempts to change the firm's culture and put past scandals behind it.
The deal could mark a turning point in efforts to protect rhinos because it represents the first official pact signed by both countries, Richard Thomas from the wildlife trade monitoring group Traffic told the BBC.
Secretary-General Ban Ki-moon said he hopes the meeting in Geneva will mark a "turning point" in diplomatic efforts to end the unrest.
The departure of Mr Rangel from the government may also mark a turning point.
The deal could mark a major turning point for Google and mark a serious threat to rival Microsoft.
This quarter may mark an important turning point for the company that has struggled under a near zero interest rate environment for more than a year.
He has been at Roma for five years and I believe the experience in England could mark a turning point in his career.
But for the Democratic Socialists it might mark a joyful turning-point.
So maybe, just maybe, the Great Smog of Beijing in recent days will mark a turning point.
Hopes that the tenure of prime minister, Junichiro Koizumi, would mark a turning-point for Japan in its commitment to change have begun to fade.
But if electric vehicles become the way of the future, then it will pay off big and potentially mark a turning point in automotive history.
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But mark my words, a key turning point in this year's debates -- perhaps the single most crucial point, in fact -- will come on the issue of preemption, and Democrats will be hoping that John Kerry can rise to the challenge.
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