Question: How many versions of a decree issued at Memphis, Egypt was the key to deciphering Egyptian hieroglyphs for the French historian in the early attempts?

full_context: Document 1: Nicolas Bergier: Nicolas Bergier (] ), Avocat au Siège Présidial de Rheims, lived in 17th-century Rheims and became interested in Roman roads there. Mentioning by chance his interest in the funding of Roman roads to Conde du Lis, advisor to Louis XIII, he found himself suddenly commanded by the king to undertake a study of all Roman roads. Five years later he published his "Histoire des Grands Chemins de l'Empire Romain", a two-volume work of over 1000 pages. There were many subsequent editions. This first scholarly study of Roman roads included engravings of the Tabula Peutingeriana. Edward Gibbon consulted Bergier's work while researching his "Decline and Fall of the Roman Empire".
Document 2: Great Mendes Stela: The Great Mendes Stela is a commemorative stele erected during the Ptolemaic dynasty by Ptolemy II Philadelphus for Mendes, Lower Egypt. Ptolemies III through V also had stelae: the bilingual, three-script Decree of Canopus and the Rosetta Stone.
Document 3: Rosetta Stone decree: The Decree of Memphis (Ptolemy V) is the third Memphis decree, the first being for his grandfather Ptolemy III (Decree of Canopus), and the second being, Decree of Memphis (Ptolemy IV). The Decree for Ptolemy V is the text recorded on the Rosetta Stone (issued at Memphis in 196 BC) in the Egyptian hieroglyphs, Demotic (Egyptian) script, and Greek.
Document 4: Jean-François Champollion: Jean-François Champollion (Champollion "le jeune"; 23 December 17904 March 1832) was a French scholar, philologist and orientalist, known primarily as the decipherer of Egyptian hieroglyphs and a founding figure in the field of Egyptology. A child prodigy in philology, he gave his first public paper on the decipherment of Demotic in 1806, and already as a young man held many posts of honor in scientific circles, and spoke Coptic and Arabic fluently. During the early 19th-century French culture experienced a period of 'Egyptomania', brought on by Napoleon's discoveries in Egypt during his campaign there (1797–1801) which also brought to light the trilingual Rosetta Stone. Scholars debated the age of Egyptian civilization and the function and nature of hieroglyphic script, which language if any it recorded, and the degree to which the signs were phonetic (representing speech sounds) or ideographic (recording semantic concepts directly). Many thought that the script was only used for sacred and ritual functions, and that as such it was unlikely to be decipherable since it was tied to esoteric and philosophical ideas, and did not record historical information. The significance of Champollion's decipherment was that he showed these assumptions to be wrong, and made it possible to begin to retrieve many kinds of information recorded by the ancient Egyptians.
Document 5: Fort Julien: Fort Julien (or, in some sources, Fort Jullien), also known as the Fort of Qaitbey (Arabic: قلعة قايتباي) is a fort located on the left or west bank of the Nile about 5 km north-west of Rashid (Rosetta) on the north coast of Egypt. It was originally built by the Ottoman Empire and occupied by the French during Napoleon Bonaparte's campaign in Egypt and Syria between 1798 and 1801. The fort became famous as the place where the Rosetta Stone was found in 1799.
Document 6: Decree of Canopus: The Decree of Canopus is a trilingual inscription in three scripts, which dates from the Ptolemaic period of Ancient Egypt. It was written in three writing systems: Egyptian hieroglyphs, demotic, and Greek, on several ancient Egyptian memorial stones, or steles. The inscription is a record of a great assembly of priests held at Canopus, Egypt, in 238 BCE. Their decree honoured Pharaoh Ptolemy III Euergetes; Queen Berenice, his wife; and Princess Berenice.
Document 7: Rosetta Stone: The Rosetta Stone is a granodiorite stele, found in 1799, inscribed with three versions of a decree issued at Memphis, Egypt in 196 BC during the Ptolemaic dynasty on behalf of King Ptolemy V. The top and middle texts are in Ancient Egyptian using hieroglyphic script and Demotic script, respectively, while the bottom is in Ancient Greek. As the decree has only minor differences between the three versions, the Rosetta Stone proved to be the key to deciphering Egyptian hieroglyphs.
Document 8: Rosetta (software): Rosetta was a dynamic binary translator for Mac OS X that allowed many PowerPC applications to run on certain Intel-based Macintosh computers without modification. Apple released Rosetta in 2006 when it changed the instruction set architecture of the Macintosh platform from the PowerPC to the Intel processor. The name "Rosetta" is a reference to the Rosetta Stone, the discovery that made it possible to comprehend and translate Egyptian hieroglyphs.
Document 9: Francesco Salvolini: Francesco Salvolini (Faenza 1810February 1838) (also known as François Salvolini) was a scholar of Ancient Egyptian hieroglyphs who worked with Jean-François Champollion on deciphering hieroglyphs near the end of the latter's life. He is known to have been in possession of some of Champollion's manuscripts and to have used them as a basis for his own subsequent publications on the subject, claiming the work as his own.
Document 10: History of Egypt: The history of Egypt has been long and rich, due to the flow of the Nile river, with its fertile banks and delta. Its rich history also comes from its native inhabitants and outside influence. Much of Egypt's ancient history was a mystery until the secrets of ancient Egyptian hieroglyphs were deciphered with the discovery and help of the Rosetta Stone. The Great Pyramid of Giza is the only one of the Seven Wonders of the Ancient World still standing. The Lighthouse of Alexandria, one of the other Seven Wonders, is gone. The Library of Alexandria was the only one of its kind for centuries.
Document 11: Hieroglyph: A hieroglyph (Greek for "sacred writing") is a character of the ancient Egyptian writing system. Logographic scripts that are pictographic in form in a way reminiscent of ancient Egyptian are also sometimes called "hieroglyphs". In Neoplatonism, especially during the Renaissance, a "hieroglyph" was an artistic representation of an esoteric idea, which Neoplatonists believed actual Egyptian hieroglyphs to be. The word "hieroglyphics" refer to a hieroglyphic script. Unlike English, the hieroglyphic script was spelt exactly as it was sounded out. Only those privileged with an extensive education (i.e. the Pharaoh, nobility and priests) were able to read and write hieroglyphs; others used simpler 'joined-up' versions: demotic and hieratic script.
Document 12: Nouvelle histoire: The term new history from the French term "nouvelle histoire", was coined by Jacques Le Goff and Pierre Nora, leaders of the third generation of the Annales School, in the 1970s. The movement can be associated with cultural history, history of representations and "histoire des mentalités".
Document 13: Théophile Gautier: Pierre Jules Théophile Gautier (] ; 30 August 1811 – 23 October 1872) was a French poet, dramatist, novelist, journalist, and art and literary critic.
Document 14: Comte de Gabalis: Comte de Gabalis is a 17th-century French text by Abbé Nicolas-Pierre-Henri de Montfaucon de Villars (1635-1673). The titular "Comte de Gabalis" ("Count of Cabala") is an occultist who explains the mysteries of the world to the author. It first appeared in Paris in 1670, anonymously, though the identity of the author came to be known. The original title as published by Claude Barbin was "Le comte de Gabalis, ou entretiens sur les sciences secrètes", "The Count of Cabala, Or Dialogs on the Secret Sciences".
Document 15: Gabriel de La Porte du Theil: Francois-Jean-Gabriel de La Porte du Theil (16 July 1742 in Paris – 28 May 1815) was a French historian. He played a role in the early attempts to decipher the Rosetta Stone.
ground_truth: three versions