 
 <prompt> text: ```One railway electrification system dey supply electric power to railway trains and trams without any prime mover or local fuel supply. Electrification get plenty advantages but e dey require plenty money to set up. How dem dey select electrification system dey based on economics of energy supply, maintenance, and capital cost compared to the money wey dem dey make from freight and passenger traffic? Different systems dey used for urban and intercity areas; some electric locomotives fit switch to different supply voltages to allow flexibility for operation.

Electric railways dey use electric locomotives to carry passengers or freight for separate cars or electric multiple units, passenger cars wey get their own motors. Electricity dey usually generate for big and efficient generating stations, then dem go transmit am go the railway network and distribute am to the trains. Some electric railways get their own generating stations and transmission lines but most dey buy power from electric utility. The railway dey usually provide their own distribution lines, switches and transformers.``` <response>: ```1. Wetin dey supply electric power to railway trains and trams?
2. Wetin e no get?
3. Wetin dey carry passengers?
4. Dem dey share motors?
5. Where power dey generate from?
6. Some stations get their own?
7. Wetin most dey do though?
8. Wetin capital amount dey compare to?
9. Urban and intercity dey use the same systems?
10. Wetin allow flexibility for operations?
11. Wetin railway dey provide?``` 