<P> Pliny attributes the work, then in the palace of Emperor Titus, to three Greek sculptors from the island of Rhodes: Agesander, Athenodoros and Polydorus, but does not give a date or patron . In style it is considered "one of the finest examples of the Hellenistic baroque" and certainly in the Greek tradition, but it is not known whether it is an original work or a copy of an earlier sculpture, probably in bronze, or made for a Greek or Roman commission . The view that it is an original work of the 2nd century BC now has few if any supporters, although many still see it as a copy of such a work made in the early Imperial period, probably of a bronze original . Others see it as probably an original work of the later period, continuing to use the Pergamene style of some two centuries earlier . In either case, it was probably commissioned for the home of a wealthy Roman, possibly of the Imperial family . Various dates have been suggested for the statue, ranging from about 200 BC to the 70s AD, though "a Julio - Claudian date (between 27 BC and 68 AD)... is now preferred". </P> <P> Although mostly in excellent condition for an excavated sculpture, the group is missing several parts, and analysis suggests that it was remodelled in ancient times and has undergone a number of restorations since it was excavated . It is on display in the Museo Pio - Clementino, a part of the Vatican Museums . </P> <P> The story of Laocoön, a Trojan priest, came from the Greek Epic Cycle on the Trojan Wars, though it is not mentioned by Homer . It had been the subject of a tragedy, now lost, by Sophocles and was mentioned by other Greek writers, though the events around the attack by the serpents vary considerably . The most famous account of these is now in Virgil's Aeneid (see the Aeneid quotation at the entry Laocoön), but this dates from between 29 and 19 BC, which is possibly later than the sculpture . However, some scholars see the group as a depiction of the scene as described by Virgil . </P> <P> In Virgil Laocoön was a priest of Poseidon who was killed with both his sons after attempting to expose the ruse of the Trojan Horse by striking it with a spear . In Sophocles, on the other hand, he was a priest of Apollo, who should have been celibate but had married . The serpents killed only the two sons, leaving Laocoön himself alive to suffer . In other versions he was killed for having had sex with his wife in the temple of Poseidon, or simply making a sacrifice in the temple with his wife present . In this second group of versions, the snakes were sent by Poseidon and in the first by Poseidon and Athena, or Apollo, and the deaths were interpreted by the Trojans as proof that the horse was a sacred object . The two versions have rather different morals: Laocoön was either punished for doing wrong, or for being right . </P>

Who do the two large marble statues in the school of athens represent