Question: One of Francis Bacon's influences was which ancient Greek tragedian?
Context: Euphorion (Greek: Εὐφορίων , "Euphoríōn") was the son of the Greek tragedian Aeschylus, and himself an author of tragedies.  In the Dionysia of 431 BCE, Euphorion won 1st prize, defeating both Sophocles (who took 2nd prize) and Euripides, who took 3rd prize with a tetralogy that includes the extant play "Medea".  He is purported by some to have been the author of "Prometheus Bound"—previously assumed to be the work of his father, to whom it was attributed at the Library of Alexandria,—for several reasons, chiefly that the playwright's portrayal of Zeus is far less reverent than in other works attributed to Aeschylus, and that references to the play appear in the plays of the comic Aristophanes.  This has led historians to date it as late as 415 BCE, long after Aeschylus's death.  If Euphorion wrote "Prometheus Bound", there are as a result five ancient Greek tragedians with one or more fully surviving plays: Aeschylus, Euphorion, Sophocles, Euripides, and the unknown author of the tragedy Rhesus. Sophocles ( ; Greek: Σοφοκλῆς , "Sophoklēs", ] ; 497/6 – winter 406/5 BC) is one of three ancient Greek tragedians whose plays have survived.  His first plays were written later than those of Aeschylus, and earlier than or contemporary with those of Euripides.  Sophocles wrote 120 plays during the course of his life, but only seven have survived in a complete form: "Ajax", "Antigone", "The Women of Trachis", "Oedipus Rex", "Electra", "Philoctetes" and "Oedipus at Colonus".  For almost 50 years, Sophocles was the most celebrated playwright in the dramatic competitions of the city-state of Athens that took place during the religious festivals of the Lenaea and the Dionysia.  He competed in 30 competitions, won 24, and was never judged lower than second place.  Aeschylus won 13 competitions, and was sometimes defeated by Sophocles, while Euripides won 4 competitions. The Prometheia (Ancient Greek: Προμήθεια ) is a trilogy of plays about the titan Prometheus.  It was attributed in Antiquity to the 5th-century BC Greek tragedian Aeschylus.  Though an Alexandrian catalogue of Aeschylean play titles designates the trilogy "Hoi Prometheis" ("the Prometheuses"), in modern scholarship the trilogy has been designated the "Prometheia" to mirror the title of Aeschylus' only extant trilogy, the "Oresteia".  Unlike the "Oresteia", only one play from this trilogy—"Prometheus Bound"—survives.  Inasmuch as the authorship of "Prometheus Bound" continues to be debated, the very existence of a Prometheus trilogy is uncertain.  To the extent that modern scholars postulate the existence of such a trilogy by a single author, the consensus holds that it comprised "Prometheus Bound", "Prometheus Unbound", and "Prometheus the Fire-Bringer", in that order. The painter Francis Bacon was largely self-taught as an artist.  As well as other visual artists, Bacon drew inspiration from the poems of T. S. Eliot, Ezra Pound and Yeats, the plays of Aeschylus, Sophocles and Shakespeare; Proust and Joyce's Ulysses. Prometheus Unbound (Ancient Greek: Προμηθεὺς Λυόμενος , "Promētheus Lyomenos") is a fragmentary play in the "Prometheia" trilogy attributed to the 5th-century BC Greek tragedian Aeschylus, thought to have followed "Prometheus Bound".  "Prometheus Unbound" was probably followed by "Prometheus the Fire-Bringer".  It is concerned with the torments of the Greek mythological figure Prometheus who defies the gods and proceeds to give fire to humanity (theft of fire), for which he is subjected to eternal punishment and suffering at the hands of Zeus. The Persians (Ancient Greek: Πέρσαι , "Persai", Latinised as "Persae") is an ancient Greek tragedy written during the Classical period of Ancient Greece by the Greek tragedian Aeschylus.  It is the second and only surviving part of a now otherwise lost trilogy that won the first prize at the dramatic competitions in Athens’ City Dionysia festival in 472 BCE, with Pericles serving as "choregos". Sofokleous Street (Greek: Οδός Σοφοκλέους , "Odos Sofokleous") is a street in the downtown part of Athens, the Greek capital.  It is named after the ancient Greek tragedian Sophocles.  The street runs from Pireos Street and ends short from Stadiou Street at Pesmatzoglou Street and Aristeidou Street.  Until 2007 the Athens Stock Exchange was located in this street, near Aiolou Street on the north side.  Further north lies Kotzia Square.  The street is approximately 600 m long. Carcinus (Greek: Καρκίνος ) was an Ancient Greek tragedian, and was a member of a family including Xenocles (a father or uncle) and his grandfather Carcinus of Agrigentum.  He received a prize for only one out of his one hundred and sixty plays, many of them composed at the court of Dionysius II of Syracuse.  Only nine titles, with associated fragments, of his plays have survived: "Achilles", "Aerope" or "Thyestes", "Ajax", "Alope", "Amphiaraus", "Oedipus", "Orestes", "Semele", and "Tyro".  He and his sons were lampooned by Aristophanes at the end of "The Wasps" and in "Peace". Prometheus the Fire-Bringer (Ancient Greek: Προμηθεὺς Πυρφόρος, "Promētheús Pyrphóros") was probably the final play in the "Prometheia" trilogy traditionally ascribed to the 5th century BC Greek tragedian Aeschylus. Achaeus of Syracuse (Ancient Greek: Ἀχαιός ὁ Συρακούσιος ; lived 4th century BC) was an ancient Greek tragedian native of Syracuse.  The "Suda" ascribes to him 10 plays, while the Pseudo-Eudocia 14.  He may be the "Achaios" who won a victory at Athens' Lenaia festival in 356 BC.
Answer: Sophocles