I answered their questions 'to the best of my knowledge'. [=I gave the best answers I could based on what I knew, but I might have answered differently if I had known something else]
No one arrived late 'to my knowledge'. [=I am not aware that anyone arrived late, but it is possible that someone arrived late and I don't know about it]
They went on vacation, 'safe in the knowledge' that the farm would be well cared for while they were away.
(..) and I'm gonna lose it. Stark. You know me? I do. You're not the only one cursed with knowledge. My only curse is you. Come on! All that for a drop of blood. You have my respect, Stark. When I'm done, half of (..)2018 Avengers: Infinity War