Duisburg-Quakenbrück railway
Table:
Duisburg–Quakenbrück railway
Native name	Bahnstrecke Duisburg–Quakenbrück
Locale	North Rhine-Westphalia, Germany
Line number

2320 (Duisburg – Oberhausen)
2280 (Oberhausen – Osterfeld)
2262 (Osterfeld – Bottrop)
2273 (Bottrop – Quakenbrück)

Line length	173 km (107 mi)
Number of tracks	Double track,Sigle – Oberhausen-Osterfeld
junction only
Track gauge	1,435 mm (4 ft 8 1⁄2 in) standard gauge
Electrification	15 kV/16.7 Hz AC overhead catenary
Operating speed	90 km/h (56 mph) (maximum)
Route number	424 (Dorsten – Coesfeld)

Using the given table, decide if the statement is entailed, neutral, or refuted by the data. Conclude with JSON {"answer": "YOUR ANSWER"} — nothing else.

Sentence: The trains on the Duisburg–Quakenbrück railway are powered by an overhead electrical source.

answer: entailed