Question: The stream which the city named after the daughter of a Greek fabulist and story teller is a tributary of which river?

full_context: Document 1: Harpina (city): Harpina (Ancient Greek: Ἆρπινα ) was an ancient city in Elis, Greece. It was a prehistoric city built next to the banks of the stream Harpinates, a tributary of the Alfeios. It was part of the city state of Pisatis and at the time of Pausanias it was ruined. Its name came from a nymph Harpina daughter of Aesop and, with Ares, mother of Oenomaus who was the founder of the city.
Document 2: Arisbe (daughter of Merops): In Greek mythology, Arisbe was a daughter of Merops of Percote, a seer. In a non-Homeric story, she married Priam, later king of Troy, and bore him a son named Aesacus. Priam subsequently divorced her in favor of Hecuba, daughter of King Dymas of Phrygia. Arisbe then married Hyrtacus, to whom she bore a son named Asius. Ephorus wrote of Arisbe as the first wife of Paris.
Document 3: Aesop: Aesop ( ; Ancient Greek: Αἴσωπος , "Aisōpos "; c. 620 – 564 BCE) was a Greek fabulist and story teller credited with a number of fables now collectively known as "Aesop's Fables". Although his existence remains unclear and no writings by him survive, numerous tales credited to him were gathered across the centuries and in many languages in a storytelling tradition that continues to this day. Many of the tales are characterized by animals and inanimate objects that speak, solve problems, and generally have human characteristics.
Document 4: Percote: Percote was a town or city on the southern (Asian) side of the Hellespont, to the northeast of Troy. Percote is mentioned a few times in Greek mythology, where it plays a very minor role each time. It was said to be the home of a notable seer named Merops, also its ruler. Merops was the father of Arisbe (the first wife of King Priam, and subsequently wife of King Hyrtacus), Cleite (wife of King Cyzicus), and two sons named Amphius and Adrastus who fought during the Trojan War. As an ally of Troy, Percote sent a contingent to help King Priam during the Trojan War - though this contingent was led not by Merops's sons, but by Asius, son of Hyrtacus, according to Homer's Iliad, one native from Percote was wounded in the Trojan War by Antilochus, two natives from Percote were killed in the Trojan War by Diomedes and Ullysses. The Meropidae (Amphius and Adrastus) instead lead a contingent from nearby Adrastea. A nephew of Priam, named Melanippus, son of Hicetaon, herded cattle (oxen) at Percote, according to Homer.
Document 5: Phlias: Phlias or Phlius or Phliasus was the son of Dionysus and Chthonophyle in Greek mythology. A native of Araithyrea in Argolis, he is mentioned as one of the Argonauts. Pausanias cites a version in which Philas is given as son of Ceisus, but himself maintains that Phlias was the son of Dionysus by Araethyrea (daughter of Aras), whereas Chthonophyle was his wife and mother of his son Androdamas. Hyginus calls him Phliasus, and a son of Dionysus and Ariadne. In the "Argonautica Orphica", it is simply stated that his mother was a nymph, without mention of her name. The town of Phlius (formerly called Araithyrea) was believed to have derived its name from him.
Document 6: The Cock and the Jewel: The Cock and the Jewel is a fable attributed to Aesop. It is one of a number that feature only a single animal. As a trope in literature, the fable is reminiscent of stories used in zen such as the kōan. It presents, in effect, a riddle on relative values and is capable of many interpretations, depending on the point of view from which it is regarded.
Document 7: Jewish folklore: Jewish folklore are legends, music, oral history, proverbs, jokes, popular beliefs, fairy tales, stories, tall tales, and customs that are the traditions of Judaism. Folktales are characterized by the presence of unusual personages (dwarfs, giants, fairies, ghosts, etc.), by the sudden transformation of men into beasts and vice versa, or by other unnatural incidents (flying horses, a hundred years' sleep, and the like). A number of haggadic stories bear folktale characteristics, especially those relating to Og, King of Bashan, which have the same exaggerations as have the "lügenmärchen" of modern German folktales. There are signs that a certain number of fables were adopted by the Rabbis either from Greek or, indirectly, from Persian and Indian sources.
Document 8: Harpina: In Greek mythology, Harpina (Greek Άρπινα) was a Naiad nymph and daughter of Phliasian Asopus and of Metope. Pausanias (5.22.6) and Diodorus Siculus (4.73.1) mention Harpina and state that, according to the tradition of the Eleans and Phliasians, Ares mated with her in the city of Pisa (located in the ancient Greek region of Elis) and she bore him Oenomaus, the king of Pisa. Oenomaus (6.21.8) founded and named after his mother the city of Harpina, not far from the river Harpinates, near Olympia. Pausanias (5.22.6) mentions Harpina in his description of a group sculpture, donated by the Phliasians, of the daughters of Asopus, which included Nemea, Zeus seizing Aegina, Harpina, Corcyra, Thebe and Asopus. The sculpture was located in the sanctuary of Hippodamia at Olympia.
Document 9: Perry Index: The Perry Index is a widely used index of "Aesop's Fables" or "Aesopica", the fables credited to Aesop, the storyteller who lived in ancient Greece between 620 and 560 BC. Modern scholarship takes the view that Aesop probably did not compose all of the fables attributed to him; indeed, a few are known to have first been used before Aesop lived, while the first record we have of many others is from well over a millennium after his time. Traditionally, Aesop's fables were arranged alphabetically, which is not helpful to the reader. B. E. Perry listed them by language (Greek then Latin), chronologically, by source, and then alphabetically; the Spanish scholar Francisco Rodríguez Adrados created a similar system. This system also does not help the casual reader, but is the best for scholarly purposes.
Document 10: Parable: A parable is a succinct, didactic story, in prose or verse that illustrates one or more instructive lessons or principles. It differs from a fable in that fables employ animals, plants, inanimate objects, or forces of nature as characters, whereas parables have human characters. A parable is a type of analogy.
Document 11: Arachosia: Arachosia is the Hellenized name of an ancient satrapy in the eastern part of the Achaemenid, Seleucid, Parthian, Greco-Bactrian, and Indo-Scythian empires. Arachosia was centred on the Arghandab valley in modern-day southern Afghanistan, although its influence extended east to as far as the Indus River in modern-day Pakistan. The main river of Arachosia was called "Arachōtós", now known as the Arghandab River, a tributary of the Helmand River. The Greek term "Arachosia" corresponds to the Aryan land of "Harauti" which was around modern-day Helmand. The Arachosian capital or metropolis was called Alexandria Arachosia or Alexandropolis and lay in what is today Kandahar in Afghanistan. Arachosia was a part of the region of ancient Ariana.
Document 12: Altis: The Altis (Greek: Ἄλτις) also referred to as the sanctuary to the gods, is the name of a location most well known for being a place of significant religious importance to the Ancient Greeks, considered to be a sacred precinct that was constructed and used from around 776 BCE to fourth century BCE and used for the worship of several Greek gods and goddesses. Though the architects are not definitively known, it is generally attributed to be partially the work of Libon of Elis. Located in the wide valley of the Alfeiós River (also Romanized as Alpheus, Alpheios) in the western part of Peloponnesus, around 18 kilometers away from the Ionian Sea, the name Altis was derived from a corruption of the Elean word alsos meaning “the grove” because the area was thickly wooded with oaks, plane trees, poplars, and olives. The structure itself was an irregular quadrangular area more than 200 yards (183 meters) on each side and walled except to the North where it was bounded by the Kronion (Mount Kronos). Inside were sanctuaries, the centers of religious worship, where the Greeks built over 70 temples, treasuries, altars, statues, and other structures in dedication to their gods. The site was continuously inhabited from Mycenaean times until the 6th century BCE, where cult activity apparently first began at the foot of the hill of Kronos where altars to the goddesses Rhea, Gaia, and Eileithyia have left their traces. Some other cults found here were devoted to figures like the hero cult of Pelops and Hippodameia (arguably the oldest shrine there) important mythological figures that are generally known for the founding myth of the Olympic Games. During the time of the Dorian Invasion settlers from northwestern Greece inhabited the Altis whereby they introduced the worship of two major Greek deities in the Greek pantheon Hera and Zeus as well as constructing the most memorable things there, the Sanctuary and altar of Zeus, where to this day the ruins of the two principal temples: the Temple of Hera (6th century BCE) and the Temple of Zeus (5th century BCE) still remain. Throughout Antiquity this Temple was considered the most perfect example of the Doric order. This sanctuary also contained one of the highest concentrations of masterpieces of the ancient Mediterranean world though many have since been lost. In connection with the cult of Zeus the Altis was then given the name Olympia, with famous Olympia, Greece being built on this site where also the first Olympic Games took place here, once every four years.
Document 13: The Cock and the Jasp: "The Taill of the Cok and the Jasp" is a Middle Scots version of Aesop's Fable "The Cock and the Jewel" by the 15th-century Scottish poet Robert Henryson. It is the first in Henryson's collection known as the "Morall Fabillis of Esope the Phrygian". "The Cok and the Jasp" is framed by a prologue and a "moralitas", and as the first poem in the collection it operates on a number of levels, and in all its parts, to introduce the larger cycle.
Document 14: Hippodamia: Hippodamia ( } or ; also Hippodamea and Hippodameia; Greek: Ἱπποδάμεια "she who masters horses" derived from ἵππος "hippos" "horse" and δαμάζειν "damazein" "to tame") was a Greek mythological figure. She was the queen of Pisa as the wife of Pelops.
Document 15: Physiologist (Russian literature): Originally, Physiologist was an ancient collection of stories about nature, which probably appeared in Alexandria in 200 - 300 A.D. The ancient Russian "Physiologist" (Russian: Физиолог ) in its 15th-century version is a translation from Bulgarian. The Bulgarian version, in turn, was translated from Greek in the 11th - 12th century. "Physiologist" contains information on animals and birds (lion, eagle etc.), mythical creatures (phoenix, centaur, siren etc.), stones, and trees. The stories are accompanied by commentaries in the spirit of medieval Christian symbolism. The images from the "Physiologist" found reflection in the old Russian literature, iconography, and book ornamentation.
ground_truth: Alfeios