Context: Greece's rail network is estimated to be at 2,548 km. Rail transport in Greece is operated by TrainOSE, a subsidiary of the Hellenic Railways Organization (OSE). Most of the country's network is standard gauge (1,565 km), while the country also has 983 km of narrow gauge. A total of 764 km of rail are electrified. Greece has rail connections with Bulgaria, the Republic of Macedonia and Turkey. A total of three suburban railway systems (Proastiakos) are in operation (in Athens, Thessaloniki and Patras), while one metro system is operational in Athens with another under construction.

Question: How long is Greek's rail network estimated to run?
Answer: 2,548 km

Question: Who runs the rail transport in Greece?
Answer: TrainOSE

Question: Who is TrainOSE a subsidiary of?
Answer: the Hellenic Railways Organization

Question: What gauge is most of Greece's railway?
Answer: standard gauge

Question: How many kilometers of Greece's railway is electrified?
Answer: 764

Question: How long is Greek's rail network estimated to be damaged?
Answer: Unanswerable

Question: Who closed the rail transport in Greece?
Answer: Unanswerable

Question: Who is TrainOSE an owner of?
Answer: Unanswerable

Question: What gauge is none of Greece's railway?
Answer: Unanswerable

Question: How many kilometers of Greece's railway is gold?
Answer: Unanswerable