Task: Explanation
Input (English): Greenhill is a hill just north of Evesham, Worcestershire and was part of the site of the Battle of Evesham. In the battle, Simon de Montfort was defeated and killed on 4 August 1265. King Henry's son, Prince Edward, later Edward I used it as his base in the battle from where he launched his attack on Simon de Montfort's forces which were gathered around Evesham Abbey. Question: What did the king known as "Edward Longshanks" and the "Hammer of the Scots" use Greenhill, Evesham for?  Answer: his base
Output (English):  King Henrys son, Prince Edward, later Edward I used it as his base in the battle from where he launched his attack on Simon de Montforts forces which were gathered around Evesham Abbey.