Question: What is the name of the town, formerly known as Webster, that currently has the Regional School Unit 4 as the district headquarters?
Sentence (from "Winslow High School (Maine)"): It is a part of Maine AOS 92 - Kennebec Valley Consolidated Schools (formerly of Maine School Union 52) along with the city of Waterville, Maine and the town of Vassalboro, Maine, and is one of two high schools in the School Unit (the other being Waterville High School of Waterville).
Relevant evidence: No