context: Santa Maria de Grottaferrata (Italian: Santa Maria de Grottaferrata) or Abbey of Saint Nile (Italian: Abbazia di San Nilo) - the only continuously existing monastery of the Byzantine rite in Italy; It was founded by St. Nile of Russia in the 1004 year. Located in the city of Grottaferrata (Lazio region).
question: When was the abbey of St. Nile founded?
answers.text: 1004