Simplify the following text for a Grade 4 native English-speaking person.
Original: It is based on `` The Idyll of Miss Sarah Brown '' and `` Blood Pressure '' , two short stories by Damon Runyon , and also borrows characters and plot elements from other Runyon stories , most notably `` Pick the Winner . ''
Simplified: The story of Guys and Dolls is based on short stories written by Damon Runyon .