问答题
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Underground Railway System
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| City | Date opened | Kilometers of route |
Passengers per year
(in million) |
| Los Angeles | 2001 | 28 | 50 |
| Kyoto | 1981 | 11 | 45 |
| Washington DC | 1976 | 126 | 144 |
| Tokyo | 1927 | 155 | 1927 |
| Paris | 1900 | 199 | 1191 |
| London | 1863 | 394 | 775 |