There is no clear knowledge of what he did during the Continuation War.
Althea had set out with no clear knowledge of her destination.
I am haunted by the clear knowledge that, in the end, evil always triumphs.
Not with the bright, clear knowledge I have given to you.
Hazel now had the clearest knowledge of where he was.
"There are indications of clear prior knowledge," the official said.
It will have the need to act properly, but no clear knowledge of what the proper way was.
Not only that, but the masquerader had a clear knowledge of the inside facts.
Of our wanderings in the great swamp I have no clear knowledge.
When the downward journey began he had no clear knowledge.