Sentence examples for an open challenge from inspiring English sources

The Sikh movement was an open challenge to Mughal royalty.

Yet Mr Okada shies from launching an open challenge.

That was an open challenge to the government.

Formalizing computational models for everyday human activities remains an open challenge.

Even fewer make them dare to mount an open challenge to the government.

Dolph Ziggler issued an open challenge to anyone in the back, to which Neville responded to.

The former hesitated to make an open challenge, but the latter went into dissidence in 1860.

And that's the sort of nonsense that can kill an Open challenge.

But some executives say Mr. Case has enough support to forestall an open challenge.

How to achieve the high capacity durably and robustly remains an open challenge.

By contrast, early mortality prediction for intensive care unit patients remains an open challenge.