Answer:
Common Knowledge:
The Earth revolves around the Sun
George Washington was the first president of the United States.
The theme of revenge in Shakespeare's Hamlet is dominant in the play.
Needs Documentation:
Hemingway's novel The Old Man and the Sea won a Nobel Prize in 1954.
A quotation from a speech by a famous person
A description of the construction methods for building the pyramids
Explanation:
Common Knowledge tends to be very broad and important facts. Things need to be documented if it's specific or if it is important to the context of something.
