Question: Which U.S. President, the 40, 41, 42nd, was this passage speaking about?

Context paragraphs:
42nd Regiment of Foot: The 42nd (Royal Highland) Regiment of Foot was a Scottish infantry regiment in the British Army also known as the Black Watch.  Originally titled Crawford's Highlanders or The Highland Regiment and numbered 43rd in the line, in 1748, on the disbanding of Oglethorpe's Regiment of Foot, they were renumbered 42nd and in 1751 formally titled the 42nd (Highland) Regiment of Foot.  The 42nd Regiment was one of the first three Highland Regiments to fight in North America.  In 1881 the regiment was named "The Royal Highland Regiment (The Black Watch)", being officially redesignated "The Black Watch (Royal Highland Regiment)" in 1931.  In 2006 the Black Watch became part of the "Royal Regiment of Scotland".

Louis O. Giuffrida: Louis Onorato "Jeff" Giuffrida (October 2, 1920 – November 20, 2012) was the Ronald Reagan administration's first director of the Federal Emergency Management Agency from 1981 to 1985.

Nathan Cullen: Nathan Cullen, {'1': ", '2': ", '3': ", '4': "} (born July 13, 1972) is a Canadian federal politician who has been the Member of Parliament for the riding of Skeena—Bulkley Valley since the 2004 federal election.  A member of the New Democratic Party (NDP), Cullen was re-elected in 2006, 2008, 2011, and 2015, allowing him to serve in the 38th, 39th, 40th, 41st, and 42nd Parliaments.  Cullen was a candidate in the 2012 New Democratic Party leadership election, and came in third.  During the 41st Parliament, Cullen was the House Leader for the Official Opposition and then Finance critic in Thomas Mulcair's Shadow Cabinet.  He is currently the NDP critic for Democratic Reform as well as Ethics, and deputy critic for Finance in the 42nd Parliament.

Ronald Reagan: Ronald Wilson Reagan ( ; February 6, 1911 – June 5, 2004) was an American statesman and actor who served as the 40th President of the United States from 1981 to 1989.  Before his presidency, he was the 33rd Governor of California, from 1967 to 1975, after a career as a Hollywood actor and union leader.

42nd Guards Motor Rifle Division: The 42nd Guards "Evpatoriyskaya Red Banner" Motor Rifle Division (Military Unit Number 29410 until 1987; 28320 afterwards) was formed originally as the 111th Rifle Division in Vologda in 1940, and became the 24th Guards Rifle Division in March 1942.  It was based in the North Caucasus following World War II; it became 42nd Guards MRD on 10 June 1957, while at Grozny.  It became 42nd Guards Training Motor Rifle Division on 18 October 1960.

New 42nd Street: The New 42nd Street is a not-for-profit organization based in Manhattan, New York City.  In 1990, the New 42nd Street was formed to oversee the redevelopment of seven neglected and historic theatres on 42nd Street between Seventh and Eighth Avenues, and to restore the block to a desirable tourist destination in Manhattan.  The theatres were the Apollo Theatre, the Empire Theatre, the Liberty Theatre, the Lyric Theatre, the Selwyn Theatre, the Times Square Theatre, and the Victory Theater.

Port Authority Bus Terminal: The Port Authority Bus Terminal (PABT) is the main gateway for interstate buses into Manhattan in New York City.  It is owned and operated by the Port Authority of New York and New Jersey (PANYNJ).  Colloquially called the Port Authority, the bus terminal is located in Midtown at 625 Eighth Avenue between 40th Street and 42nd Street, one block east of the Lincoln Tunnel and one block west of Times Square.  The PABT, opened in 1950 between 8th and 9th Avenues and 40th and 41st Streets, was built to consolidate the many different private terminals spread across Midtown Manhattan.  A second wing extending to 42nd Street was added in 1979.  It is one of three bus terminals operated by the PANYNJ, the others being the George Washington Bridge Bus Station in Upper Manhattan and the Journal Square Transportation Center in Jersey City.

Grand Central (IRT elevated station): Grand Central was the terminal for some trains of the IRT Third Avenue Line.  It was part of the original Third Avenue El, which opened on Monday, August 26, 1878, and not only served Grand Central Terminal, but its two predecessors, Grand Central Station (1899-1913) and Grand Central Depot (1871-1899).  When the El opened north of 42nd Street nearly a month later, this segment was reduced to a shuttle, which connected to the mainline at 42nd Street.  This station had two tracks and one island platform and two side platforms, all connected at the west end.  The tracks ended just east of what was recently the off-ramp from the Park Avenue Viaduct at Pershing Square.  In 1904, Interborough Rapid Transit opened the Grand Central Subway station, which gained platforms for the IRT Flushing Line in 1915, and new platforms for the expanded IRT Lexington Avenue Line in 1918, the same year the original platforms at the station were converted for the 42nd Street Shuttle.  By this time, the El station became obsolete and it was closed on December 6, 1923.

42nd (East Lancashire) Infantry Division: The 42nd (East Lancashire) Infantry Division was an infantry division of the British Army.  The division was raised in 1908 as part of the Territorial Force (TF), originally as the East Lancashire Division, and was redesignated as the 42nd (East Lancashire) Division on 25 May 1915.  It was the first TF division to be sent overseas during World War I.  The division fought at Gallipoli, in the Sinai desert and on the Western Front in France and Belgium.  Disbanded after the war, it was reformed in the Territorial Army (TA), in World War II it served as the 42nd (East Lancashire) Infantry Division with the British Expeditionary Force (BEF) and fought in Belgium and France before being evacuated at Dunkirk.  The division was later reformed in the United Kingdom and, in November 1941, was converted into the 42nd Armoured Division which was disbanded in October 1943 without serving overseas.  A 2nd Line duplicate formation, the 66th (2nd East Lancashire) Division, was created when the Territorials were doubled in both world wars.

Grand Central–42nd Street (New York City Subway): Grand Central–42nd Street is a major station complex of the New York City Subway.  Located in Midtown Manhattan at the intersection of Park Avenue and 42nd Street, with parts of the station extending east to Lexington Avenue, it is the second busiest station in the 425 -station system, with 46,121,509 passengers in 2016; only the Times Square station complex has more riders.  It serves trains on the IRT Lexington Avenue Line, the IRT Flushing Line and the 42nd Street Shuttle, making it an all-IRT transfer point.  The stations of the complex lie next to and beneath Grand Central Terminal, which serves all Metro-North Railroad lines east of the Hudson River.

Supporting paragraphs: Louis O. Giuffrida Ronald Reagan
Answer: 40th