The Bourne and Sleaford Railway was an 18 mi Great Northern Railway built single-track branch railway line that ran between Bourne, on the Midland and Great Northern Joint Railway main line between the Midlands and the Norfolk Coast, to Sleaford, on the Peterborough to Lincoln Line via four intermediate stations: , , , and .
The railway ran nearly 20 miles
18 is very close to 20
( z1 run :ARG1 ( z2 railway ) :ARG2 ( z3 nearly :op ( z4 distance-quantity :quant 20 :unit ( z5 mile ) ) ) )