Question: Frank S. Giles, Jr., was a politician who was a Member of the Massachusetts Public Safety Commissioner, and a Member of which lower house of the Massachusetts General Court, the state legislature of the Commonwealth of Massachusetts, is called what? 
Sentence (from "Humphrey Atherton"): He was chosen assistant governor, a member of the lower house of the General Court who also served as magistrate in the judiciary of colonial government, in 1654, and remained as such until his death."
Relevant evidence: No