The less Meg knew about the baron's possible role in their father's death, the better.

Mohammed didn't know about the Holocaust's role in the founding of Israel.

What else is important for people to know about your role?

Owing to lack of research, much is not known about octopamine or its role in humans.

Prosecutions were not widely expected in the current case, based on what is known about the lawyers' role so far.

Not much is known as yet about the company's role during this war.

How many jurors know anything about their role, their rights or the law on juries?

I don't know about Polaroid's role in the writing of the book.

"The Senator is quite confident that the more people know about his role in this, the more comfortable they will be."

Little is known about his role, but the events left a strong impression; it was a "political awakening" for him.