Question: Which of the town in which Borough of Broxbourne council is based is a town in the Broxbourne borough of the English county of Hertfordshire, situated in the Lea Valley?
Sentence (from "Broxbourne Borough Council election, 1980"): The Broxbourne Council election, 1980 was held to elect council members of the Broxbourne Borough Council, the local government authority of the borough of Broxbourne, Hertfordshire, England.
Relevant evidence: No