Question: The Cronulla railway line is owned by a corporation with a portfolio of how many billions of railway property?
Sentence (from "Halle–Bebra railway"): The Halle–Bebra railway, also known in German as the Thüringer Bahn ("Thuringian Railway"), is a 210 kilometre-long railway line from Halle (Saale) via Erfurt and Gerstungen to Bebra, mainly in Thuringia.
Relevant evidence: No