Question: How many acres of land is the Box Moor Trust responsible for to include the parishes of Hemel Hempstead and Bovingdon?
Sentence (from "Bovingdon"): It forms the largest part of the ward of Bovingdon, Flaunden and Chipperfield, which had a population of 4,600 at the 2001 census, increasing to 8,999 at the 2011 Census.
Relevant evidence: No