Question: What is the postcode of a town in Cook County, New South Wales, that is situated approximately 100 km west of the Sydney central business district, and about 8 km east of Katoomba?
Sentence (from "Bell, New South Wales"): It is the north-westernmost village in the City of Blue Mountains, located approximately 125 km west of Sydney central business district by road or 137 km by rail, approximately 20 km east of Lithgow and 10 km north of Mount Victoria.
Relevant evidence: No