Question: What is this commuter town in the Broxbourne borough of Hertfordshire in the East of England with increasing population that Lee Valley Park covers?
Sentence (from "Broxbourne"): Broxbourne is a commuter town in the Broxbourne borough of Hertfordshire in the East of England with a population of 13,298 in 2001, increasing to 15,303 at the 2011 Census for the sum of the two Broxbourne Wards.
Relevant evidence: Yes