Question: The Cronulla railway line is owned by a corporation with a portfolio of how many billions of railway property?

Context paragraphs:
Cronulla railway station: Cronulla railway station is the terminus station of the Cronulla line, serving the Sydney suburb of Cronulla.  It is served by Sydney Trains T4 line services.  The station is unusual in that the two platforms are situated end to end, rather than side by side, making it the second longest rail platform in New South Wales, after Albury.

Coonamble railway line: The Coonamble railway line is a railway line in New South Wales, Australia.  The line branches from the Main West Line at Dubbo.  It opened in 1903, and carried passenger traffic until the 1970s.  900/950 class railmotors were first introduced on the service between Dubbo and Coonamble.  It continues to carry goods traffic, predominately grain.  The disused historic Coonamble railway station is currently at risk of demolition due to vandalism and high maintenance costs.  The line is owned by the Rail Infrastructure Corporation of New South Wales, however operations over the line are managed by the Australian Rail Track Corporation (ARTC) under a 60-year agreement.  The northern section of the line features track that is in generally poor condition with derailments not uncommon.

Merriwa railway line: The Merriwa railway line is in northern New South Wales, Australia.  The line branches from the Main North line at Muswellbrook and travels north through Sandy Hollow to the town of Merriwa, a distance of approximately 80 km .  The line was completed to Merriwa on 29 October 1917, however the section north of Sandy Hollow closed in 1988.  The section between Muswellbrook and Sandy Hollow, combined with the Sandy Hollow – Gulgong railway line forms the Australian Rail Track Corporation's Ulan line between Muswellbrook and Gulgong on the Gwabegar railway line.

Cronulla railway line: The Cronulla railway line is a suburban branch line serving the southern suburbs of Sydney, New South Wales, Australia.  The line is owned by RailCorp.  Sydney Trains operates electric passenger train services over the line as part of its Eastern Suburbs & Illawarra Line.

Osaka Higashi Line: The Osaka Higashi Line (おおさか東線 , Ōsaka-Higashi-sen ) is a railway line in Osaka, Japan, operated by the West Japan Railway Company (JR-West).  Before being named on August 23, 2007, the line was constructed with the tentative name "Osaka Outer Loop Line (大阪外環状線 , Ōsaka-soto-kanjōsen ) ".  Conceived in the 1950s during Japan's explosive postwar economic growth, it was planned as a grand "outer loop" of the city, using existing freight lines to link Amagasaki with Shin-Osaka, Suita, Awaji, Hanaten, Kami, Uriwari and Sugimotochō, with a newly constructed segment into Osaka's (then primarily industrial) Nankō Port Town.  However, with JNR's financial situation deteriorating catastrophically (culminating in its privatization) and continuing issues surrounding land acquisition and squatting by local residents on railway property, the plan was cut back to Shin-Osaka and Kami, terminating at Kyūhōji in the south.  (The Hanwa Freight Line, which would have carried the southern segment from Kami to Sugimotochō, was officially abandoned by JR Freight in 2009.)  The line will connect Shin-Osaka Station in northern Osaka with Kyūhōji Station in Yao, forming an arc around the eastern suburbs of the city, but currently only the southern half of the line, between Hanaten and Kyūhōji, is in operation as a connection between the Tōzai/Katamachi and Yamatoji lines.

Ueda Electric Railway Bessho Line: The Bessho Line (別所線 , Bessho-sen ) is an 11.6 km Japanese railway line in Ueda, Nagano, Japan, operated by the private railway operator Ueda Electric Railway (上田電鉄 , Ueda Dentetsu ) .  It connects Ueda and Bessho-Onsen stations.  This is currently the only railway line Ueda Dentetsu operates.  Although the company is the root of its holding company, Ueda Kōtsū (上田交通 , "Ueda Transport") , the group now mainly operates resort amusement facilities and bus lines.  Ueda Kōtsū is owned by Tokyu Corporation.  The railway line lacked funds to upgrade the infrastructure to meet the new safety standards, and separated to become the present company.

RailCorp: Rail Corporation New South Wales (RailCorp) is a State-owned corporation of the State of New South Wales, Australia established under the "Transport Administration Act 1988" in 2004.  From 2004 until 2013, RailCorp operated passenger train services in New South Wales and maintained rail infrastructure within the New South Wales Metropolitan Rail Area.  From 2013, operation and maintenance functions were transferred to the new Sydney Trains and NSW TrainLink agencies, leaving RailCorp as the legal owner of a portfolio of $28.6 billion of railway property, mostly within metropolitan area.  Other functions include network access, leasing and managing the NSW Government's contract with Airport Link Company.  The acting chief executive of RailCorp is Sydney Trains chief executive Howard Collins.

Badnera Junction railway station: Badnera railway station serves Badnera in Amravati district in the Indian state of Maharashtra.  It is a junction station on the Howrah-Nagpur-Mumbai line.  There is a broad gauge line to Narkhed.  Today, Badnera is a part of Amravati Municipal Corporation.  City buses are also available from this Railway station to many area of Amravati city.  This is one of major junctions on the Mumbai Howrah Railway Line.  Badnera is crew change point for all goods Trains plying Bhusaval Nagpur Line addition to that some Express Trains gets crew change here as well.  Badnera is last station of Bhusaval Division of Central Railway so, many express trains get slack time here so reached Badnera Right time.  There is one Branch line for Amravati which is for 9 km one of shortest branch lines in India.  Badnera, New Amravati Railway station are in Amravati Municipal Corporation, so connected well with Amravati city.  Trains starting from Amravati to Nagpur does not touch Badnera due Chord line which eliminates Reversal at Badnera.51262 Wardha Amravati Passenger halt here for 110minutes, 51198 Wardha Bhusaval Passenger halt here for 85 min which is very rare in Indian Railways in terms of halt time.

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.  As far as Gerstungen the line originally belonged to the Thuringian Railway Company.  From Gerstungen to Bebra, it was owned by the Frederick William Northern Railway ("Friedrich-Wilhelms-Nordbahn"), named after the Prussian king, Frederick William IV.  It is now a two-track, electrified, standard gauge mainline operated by DB Netze.  It was opened between 1846 and 1849 and was the first railway line in Thuringia (apart from a small piece of the Leipzig–Hof line of the Saxon-Bavarian Railway Company —"Sächsisch-Bayerische Eisenbahn-Compagnie"— near Altenburg).  All types of trains from Regionalbahn to ICE currently run on the line except Interregio-Express.  Four of the six largest cities in Thuringia are located on the line.

Castle Bytham railway station: Castle Bytham railway station was a station in Castle Bytham.  It was Midland Railway property but train services were operated by the Midland and Great Northern Joint Railway (M&GN).  The station and line closed in 1959 along with most of the M&GN.

Supporting paragraphs: Cronulla railway line RailCorp
Answer: $28.6