Complex sentence: Podesta is a phantom island reported by the Italian Captain Pinocchio of the vessel "Barone Podestà" in 1879 claiming it to be just over a kilometre in circumference located 1390 km due west of Valparaiso, Chile.
Split into simpler sentences: Podesta is a phantom island reported by the Italian Captain Pinocchio of the vessel "Barone Podestà". In 1879 an Italian captain announced his discovery of Podesta Island, just over a kilometre in circumference, 1390 km due west of Valparaiso, Chile.