Question: which district of Chūō, Tokyo, did Tokyo Expressway runs in a semicircular loop around

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Inner Circular Route (Shuto Expressway): The Inner Circular Route (都心環状線 , Toshin Kanjō-sen ) , signed as Route C1, is one of the routes of the Shuto Expressway system serving the central part of the Greater Tokyo Area.  The route is a complete loop around the central Tokyo wards of Chiyoda, Chūō, and Minato, with a total length of 14.3 km .  In addition to serving areas of central Tokyo, the Inner Circular Route is also serves the origin of the Shuto Expressway radial routes.

Ken-Ō Expressway: The Ken-O Expressway (圏央道 , Ken-Ō Dō ) , or Metropolitan Inter-City Expressway (首都圏中央連絡自動車道 , Shuto-ken Chūō Renraku Jidōsha-dō ) , is a partially completed ticket system toll expressway in Japan, owned and operated by the Central Nippon Expressway Company and East Nippon Expressway Company.  In conjunction with the Tokyo Bay Aqua-Line and the Bayshore Route of the Shuto Expressway, it will form a full outer ring road of Tokyo.  It is assigned the national highway Route 468 number.

Yaesu Route: The Yaesu Route (八重洲線 , Yaesu-sen ) , signed as Route Y, is one of the routes of the Shuto Expressway system in the Tokyo area.  It connects the Inner Circular Route at Kandabashi Junction in Chiyoda Ward to the Tokyo Expressway at Nishi-ginza Junction in Chūō Ward.  The expressway is 1.9 km in length and primarily serves Tokyo Station.  All large truck traffic is banned on this route.

Musashino Line: The Musashino Line (武蔵野線 , Musashino-sen ) is a railway line operated by the East Japan Railway Company (JR East).  It links Tsurumi Station in Yokohama with Nishi-Funabashi Station in Chiba Prefecture, forming a 100.6 km unclosed loop around central Tokyo.  Passenger operations are limited to the 71.8 km portion between Fuchūhommachi and Nishi-Funabashi; the Tsurumi to Fuchūhommachi portion, called the "Musashino South Line", is normally used only by freight trains.  The line forms part of what JR East refers to as the "Tokyo Mega Loop" (東京メガループ ) around Tokyo, consisting of the Keiyo Line, Musashino Line, Nambu Line, and Yokohama Line.

Japan National Route 1: National Route 1 is a major highway on the island of Honshū in Japan.  It connects Chūō, Tokyo in the Kantō region with the city of Osaka, Osaka Prefecture in the Kansai region, passing through the Chūbu region en route.  It follows the old Tōkaidō westward from Tokyo to Kyoto, and the old Kyo Kaidō from there to Osaka.  Between Tokyo and Aichi Prefecture it parallels the Tomei Expressway; from there to Mie Prefecture, the Higashimeihan Expressway, and from Shiga Prefecture to Osaka, the Meishin Expressway.  Its total length is 565.4 km .  At its eastern terminus in Nihonbashi, Chūō, Tokyo, it meets National Routes 4, 6, 14, 15, 17, and 20.  At its western terminus in Umeda, Kita-ku, Osaka, it links with Routes 2, 25, 26 and other highways.

Ginza: Ginza (銀座 ) is a district of Chūō, Tokyo, located south of Yaesu and Kyōbashi, west of Tsukiji, east of Yūrakuchō and Uchisaiwaichō, and north of Shinbashi.

Tokyo Expressway: The Tokyo Expressway (東京高速道路 , Tōkyō Kōsoku Dōro ) , also known as the KK Expressway, is a short (2 km) untolled expressway in central Tokyo that is owned and maintained by Tokyo Kōsoku Dōro K.K.  It runs in a semicircular loop around the Ginza district of Chūō-ku.  The loop is closed by part of the Shuto Expressway Inner Circular Route.

Jinji Expressway: The Jinji Expressway runs entirely within Tianjin, and links Tianjin city in the south with Ji County in the north.  Hence the name Tianjin - Ji County - Jinji Expressway.  The expressway runs for 104 kilometres.  It opened in late September 2003, just days before October 1 - China's National Day holiday.  Roadworks existed for parts of the expressway in summer 2005.  Road conditions are slightly deteriorating.

G50 Shanghai–Chongqing Expressway: The Shanghai–Chongqing Expressway (), commonly referred to as the "Huyu Expressway" () is an east-west bound expressway that connects the cities of Shanghai, China in Yangtze River Delta, and Chongqing in western China.  The expressway runs through six provinces/municipalities and adjoin major cities such as Wuhu, Anqing, Wuhan and Yichang, roughly parallel to G42 Shanghai-Chengdu Expressway to its south.  The thoroughfare begins at Huqingping Outer Ring Interchange near Hongqiao International Airport, where it meets S20 Outer Ring Expressway in Shanghai, and terminates at an interchange in Jiangbei District, where the highway joins G75 Lanzhou-Haikou Expressway.  It is fully complete and spans 1900 km in length.

Seoul Ring Expressway: The Seoul Ring Expressway (Expressway No.100)(Hangul: 서울외곽순환고속도로 ; RR: "Seoul Oegwak Sunhwan Gosok Doro " ) is an expressway, circular beltway or ring road around Seoul, South Korea.  It connects satellite cities around Seoul, Ilsan, Namyangju, Hanam, Pyeongchon, Jungdong, Bundang, Pangyo, Sanbon and Gimpo.  The expressway runs 127.6 km.  Seoul Ring Expressway is currently under construction to widen the expressway between Anhyeon Junction to Seongnam which is expected to be finished in 2016.

Supporting paragraphs: Tokyo Expressway Ginza
Answer: Ginza