At this time, there is no known way to prevent Alzheimer's disease.

There was no known way to get the two observers to agree.

And you've done nothing but sell yours in every known way.

Unfortunately, there's no known way you can report to us on what happens.

And it's a known way of getting data out.

These animals were not marked for success in any known way.

And there was no known way to jam a satellite.

For this reason, there is no known way to prevent it.

There is no known way that someone can travel ahead or back in time.

But before that there was no known way of doing it.