Sentence examples for someone to know from inspiring English sources

Is it possible for someone to know that p without being certain that p, or to be certain that p without knowing that p? Is it possible for p to be certain without being known by someone, or to be known by someone without being certain?

Now there is someone to know.

She wanted someone to know".

But you don't have to shoot someone to know about murder".

I needed someone to know who I really was, and his reaction blew me away.

"Do you want someone to know where you are at all times?

"Is it on the list?" someone wanted to know.

What kind of rodents, someone wanted to know.

"I think he was scared to let someone get to know him really well".

What does someone need to know to understand the evolution and biology of morality effectively?

Someone has to know.