If nothing else, the pale, sick faces of the two scientists proved his assertion.

She decided their question, and the reaction her response provoked, proved Joe's assertion that history had been changed.

And repeat 'no.' I was trying to get you to prove your assertion that there was one.

But there was no way of proving his assertion.

Then you will have no problem providing links to benchmarks proving your assertion.

As if to prove his assertion, he pushed himself with obvious effort to a sitting position, propped against the wall.

In order to prove his assertion, Ercolani volunteered to fly the aircraft himself.

We were simply attempting to prove or disprove his assertion.

These growth rates prove Cameron's assertion that this is "the moment for Africa".

I couldn't find anything which proves your assertion.