Question: Esslingen is a railway station in the Swiss canton of Zürich and the municipality of Egg, it is the outer terminus of the Forchbahn (FB) from where, which is the largest city in Switzerland and the capital of the canton of Zürich?
Context: Zürich or Zurich ( ) is the largest city in Switzerland and the capital of the canton of Zürich.  It is located in north-central Switzerland at the northwestern tip of Lake Zürich.  The municipality has approximately 400,028 inhabitants, the urban agglomeration 1.315 million and the Zürich metropolitan area 1.83 million.  Zürich is a hub for railways, roads, and air traffic.  Both Zürich Airport and railway station are the largest and busiest in the country. Zürich Stadelhofen (German: "Zürich Stadelhofen" ) is an important local railway station in the city of Zürich, on the Zürich-Rapperswil, Zürich-Winterthur, Zürich-Uster lines of the SBB CFF FFS (Swiss Federal Railways).  It is also the terminus of the Forchbahn (FB) suburban railway and is served by several lines of the Zürich tram network. Esslingen is a railway station in the Swiss canton of Zürich and the municipality of Egg.  It is the outer terminus of the Forchbahn (FB) from the city of Zürich, which is operated as Zürich S-Bahn service S18.  The station is operated by the Forchbahn, and has three terminal platforms and a bus interchange located under an overall roof.  It serves the village of Esslingen. The Forch railway (German: "Forchbahn" , FB or Frieda) is a local railway line in the Swiss canton of Zürich.  It is owned and operated by the Forchbahn AG, and is branded as line S18 of the Zürich S-Bahn.  The standard Zürcher Verkehrsverbund (ZVV) zonal fare tariffs apply to the line. Forch is a railway station in the Swiss canton of Zürich and the municipality of Küsnacht.  It is the principal intermediate station and headquarters of the Forchbahn (FB), which is operated as Zürich S-Bahn service S18 and provides links to the city of Zürich and the nearby village of Esslingen.  The station is operated by the Forchbahn, and serves the village of Forch. Rafz is a railway station in the Swiss canton of Zürich and municipality of Rafz.  The station is located on the Eglisau to Neuhausen line of the Swiss Federal Railway (SBB) that crosses the international border twice on its route between the Swiss cantons of Zürich and Schaffhausen.  The station is operated by the SBB and is an intermediate stop on the Zürich S-Bahn line S9 between Zürich and Schaffhausen. Affoltern am Albis is a railway station in the Swiss canton of Zürich, situated in the municipality of Affoltern am Albis.  The station is located on the Zürich to Zug via Affoltern am Albis railway line and is an intermediate stop on Zürich S-Bahn line S5, as well as being the terminus of line S14. Effretikon is a railway station in the Swiss canton of Zürich and municipality of Illnau-Effretikon.  The station is located on the Zürich to Winterthur main line at the junction point with the Effretikon to Hinwil line.  It is an intermediate stop on Zürich S-Bahn services S3, S7, S8 and S24.  For most of the day it is also the outer terminus of S-Bahn service S19, although in peak periods some trains continue to Pfaffikon SZ . Kloten Balsberg is a railway station in the Swiss canton of Zürich and municipality of Kloten.  The station is located on the Zürich–Winterthur railway line and is an interchange point between the Zürich S-Bahn and the Stadtbahn Glattal light rail system.  The station is served by S-Bahn line S7, and by Zürich tram routes 10 and 12, operating on behalf of the Stadtbahn Glattal. Zürich Rehalp is a railway station in the Swiss canton of Zürich, on the boundary between the city of Zürich and the municipality of Zollikon.  The station is located on the line of the Forchbahn (FB), which is operated as Zürich S-Bahn service S18.  The station is operated by the FB and is the first true railway station on the S18 out its city terminus at Zürich Stadelhofen station.  Between Stadelhofen and a point immediately to the city side of Rehalp station, the S18 operates over the tracks of the Zürich tram network, stopping at selected tram stops.  Beyond Rehalp, the service operates on its own dedicated right of way.
Answer: Zürich