Settle-Carlisle line
Table:
Settle–Carlisle line

Steam locomotive Tornado on the Ribblehead Viaduct

Overview
Status	Operational
Owner	Network Rail
Locale	North West England
Yorkshire and the Humber
Termini

Settle
54°04′01″N 2°16′51″W﻿ / ﻿54.0669°N 2.2807°W﻿ / 54.0669; -2.2807﻿ (Settle station)
Carlisle
54°53′28″N 2°56′01″W﻿ / ﻿54.8911°N 2.9335°W﻿ / 54.8911; -2.9335﻿ (Carlisle station)

Stations	10
Service
Type	Main line
System	National Rail
Services	1
Operator(s)	Northern Rail
Depot(s)	Neville Hill, Leeds
Rolling stock	Primarily Class 158 and Class 153
History
Opened	1875 (goods) and 1876 (passengers)
Technical
Line length	71.75 mi (115.47 km)
Number of tracks	Double (except on the Ribblehead Viaduct)
Track gauge	Standard gauge 4 ft 8+1⁄2 in (1,435 mm)
Operating speed	60 mph
Highest elevation	Ais Gill (1,169 feet (356 m))

Based on the table, judge whether the statement is entailed, neutral, or refuted according to the table. Provide the verdict inside {"answer": "YOUR ANSWER"} as JSON.

Hypothesis: Settle–Carlisle line is the main line of the National Rail System.

answer: entailed