We still don't have the hard evidence to put him away.
She'll need hard evidence to back up what she knows.
The only hard evidence we have is our own experience on Earth.
They had no hard evidence, he was certain of that.
It was hard evidence, or get out of my office until you've got some.
But this was the first time she'd had hard evidence.
"The government wants to make an example of him but they lack the hard evidence."
Without hard evidence, she shouldn't have to pay any more.
Some saw no hard evidence that such a plan could work.
It took almost another six months to find the hard evidence they were looking for.