Question: Who is a Greek fabulist and story teller credited with a number of fables now collectively known as "Aesop's Fables" that has a widely used index of  the storyteller who lived in ancient Greece between 620 and 560 BC?
Sentence (from "Perry Index"): Traditionally, Aesop's fables were arranged alphabetically, which is not helpful to the reader.
Relevant evidence: No