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? 

Context paragraphs:
Massachusetts General Court: The Massachusetts General Court (formally styled the General Court of Massachusetts) is the state legislature of the Commonwealth of Massachusetts.  The name "General Court" is a hold-over from the earliest days of the Massachusetts Bay Colony, when the colonial assembly, in addition to making laws, sat as a judicial court of appeals.  Before the adoption of the state constitution in 1780, it was called the Great and General Court, but the official title was shortened by John Adams, author of the state constitution.  It is a bicameral body.  The upper house is the Massachusetts Senate which is composed of 40 members.  The lower body, the Massachusetts House of Representatives, has 160 members.  (Until 1978, it had 240 members) It meets in the Massachusetts State House on Beacon Hill in Boston.

Frank S. Giles: Frank S. Giles, Jr. (born June 15, 1915 in Methuen, Massachusetts – died March 2, 1991 in Burlington, Massachusetts ) was a politician who was a Member of the Massachusetts House of Representatives and the Massachusetts Public Safety Commissioner.

Massachusetts House of Representatives: The Massachusetts House of Representatives is the lower house of the Massachusetts General Court, the state legislature of the Commonwealth of Massachusetts.  It is composed of 160 members elected from 12 counties each divided into single-member electoral districts across the Commonwealth.  The House of Representatives convenes at the Massachusetts State House in Boston.

Massachusetts Lottery: The Massachusetts Lottery was established in 1971, following the legalization of gambling by the Massachusetts General Court, the legislature of the Commonwealth.  The Lottery is administered by a commission of five members, who include the Treasurer and Receiver-General (who serves as chairperson); the Secretary of the Massachusetts Department of Public Safety; and the Comptroller, who serve on an ex officio basis.  The Governor appoints the other two members.

J. Henry Goguen: Joseph Henry Goguen (March 8, 1899 – December 15, 1982) was a Massachusetts teacher, politician and civil servant, who served as Member of the city council of Leominster, Massachusetts, as a member of the Massachusetts House of Representatives, as the Massachusetts Public Safety Commissioner, the United States Marshall for the District of Massachusetts and, from 1958 to 1959, as the acting Secretary of the Commonwealth.

Massachusetts State House: The Massachusetts State House, also known as the Massachusetts Statehouse or the New State House, is the state capitol and seat of government for the Commonwealth of Massachusetts, located in the Beacon Hill/Downtown neighborhood of Boston.  The building houses the Massachusetts General Court (state legislature) and the offices of the Governor of Massachusetts.  The building, designed by noted architect Charles Bulfinch, was completed in January 1798 at a cost of $133,333 (more than five times the budget), and has repeatedly been enlarged since.  It is considered a masterpiece of Federal architecture and among Bulfinch's finest works, and was designated a National Historic Landmark for its architectural significance.

Robert Keayne: Robert Keayne (1595 – March 23, 1656) was a prominent public figure in 17th-century Boston, Massachusetts.  He co-founded the Ancient and Honorable Artillery Company of Massachusetts and served as speaker of the House of the Massachusetts General Court.  Keayne was a prosperous London merchant who joined his fellow Puritans in Boston where he built a fortune.  He was accused of unfair business practices, and brought before the legislature, the Massachusetts General Court.  It found Keayne guilty, fined him, and compelled him to confess his “sins.”  He proclaimed his innocence, and justified his actions in elaborate detail in his will.  It bequeathed £2500 to Boston, to upgrade the infrastructure with an aqueduct, relieve the city's poor, and fund the First Town-House, a grand public meeting place.  He attached a condition to the effect that the bequest would become void if there were any legal actions against his estate; there were none.

Alaska Public Safety Commissioner dismissal: The Alaska Public Safety Commissioner dismissal, also known as Troopergate, involves the possibly illegal July 2008 dismissal of the Alaskan Public Safety Commissioner Walter C. Monegan III by Governor Sarah Palin for not firing Alaskan State Trooper Mike Wooten, who was also Palin's ex-brother-in-law.

List of Massachusetts Senate delegations: The Massachusetts Senate is the upper house of the Massachusetts General Court, the bicameral state legislature of the Commonwealth of Massachusetts.  The Senate comprises 40 elected members from 40 single-member senatorial districts in the state.  Descended from the colonial legislature, the current Massachusetts Senate was established in June 1780 upon the adoption of the Massachusetts Constitution.  The first General Court met in October 1780 and consisted of one-year elected terms for both houses.  This was expanded to two-year terms starting with the 142nd General Court in January 1921.  The current delegation is the 187th General Court (2011–2012), consisting of 36 Democrats (D) and 4 Republicans (R).

Humphrey Atherton: Major-General Humphrey Atherton, ( ca.1608 – September 16, 1661) an early settler of Dorchester, Massachusetts, held the highest military rank in colonial New England.  He first appeared in the records of Dorchester on March 18, 1637 and made freeman May 2, 1638.  He became a representative in the General Court in 1638 and 1639–41.  In 1653, he was Speaker of the House, representing Springfield, Massachusetts.  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."  He was a member of the Ancient and Honorable Artillery Company of Massachusetts and held the ranks of lieutenant and captain for several years before rising to the rank of major-general.  He also organized the first militia in Massachusetts.

Supporting paragraphs: Frank S. Giles Massachusetts House of Representatives
Answer: Massachusetts House of Representatives