Each part of the world is known as a space.

My part in the Company was known to him, as to all the others.

But they could only ever know part of the story.

You already knew part of what I was a long time ago.

But you know only part of why I am here.

But no one really knows our part of the story.

Over the last week, this part of the story became well known.

"Now we know at least part of what happened to your friend."

She, like the others, already knew part of the answer.

I knew the answer, or at least part of it.