Question: What gun does the director of Pollock use in Westworld?

Context paragraphs:
paragraph_text: As of December 2014, the US Filet - O - Fish contains a battered, fried fish fillet made from Alaska pollock. In the Republic of Ireland either hoki or Alaska pollock may be served. In New Zealand and the United Kingdom Filet - O - Fish contains hoki instead of Alaska pollock. McDonald's Canada, United States, United Kingdom, Australia, New Zealand, Portugal, Czech Republic, The Netherlands and Hong Kong use a half slice of cheese in each Filet - O - Fish sandwich.
title: Filet-O-Fish
paragraph_text: The Cannone da 90/53 was an Italian-designed cannon used both in an anti-aircraft role and as an anti-tank gun during World War II. It was one of the most successful anti-aircraft guns to see service during the conflict.
title: Cannone da 90/53
paragraph_text: The first several years of the 20th century were a period of confusion and transition in US naval strategy, tactics, and ship design. The "Mississippi" class, along with the preceding , were designed based on lessons learned in the Spanish–American War, but while they were under construction, the Russo-Japanese War, war games, and experimentation demonstrated new priorities and concepts which would influence future designs. This was also a period where rapid development of techniques and training in the use of large guns made the inclusion of rapid-fire intermediate and secondary weapons unnecessary. Future US designs would reduce the confusing array of guns sizes in predreadnought battleships and rely on one gun size for the main armament, the "all-big-gun" concept, along with many small guns of a uniform caliber to combat small vessels in close proximity.
title: Mississippi-class battleship
paragraph_text: However, the problem of deflection settings — 'aim-off' — required knowing the rate of change in the target's position. Both France and UK introduced tachymetric devices to track targets and produce vertical and horizontal deflection angles. The French Brocq system was electrical, the operator entered the target range and had displays at guns; it was used with their 75 mm. The British Wilson-Dalby gun director used a pair of trackers and mechanical tachymetry; the operator entered the fuse length, and deflection angles were read from the instruments.
title: Anti-aircraft warfare
paragraph_text: The allies' most advanced technologies were showcased by the anti-aircraft defence against the German V-1 cruise missiles (V stands for Vergeltungswaffe, "retaliation weapon"). The 419th and 601st Antiaircraft Gun Battalions of the US Army were first allocated to the Folkestone-Dover coast to defend London, and then moved to Belgium to become part of the "Antwerp X" project. With the liberation of Antwerp, the port city immediately became the highest priority target, and received the largest number of V-1 and V-2 missiles of any city. The smallest tactical unit of the operation was a gun battery consisting of four 90 mm guns firing shells equipped with a radio proximity fuse. Incoming targets were acquired and automatically tracked by SCR-584 radar, developed at the MIT Rad Lab. Output from the gun-laying radar was fed to the M-9 director, an electronic analog computer developed at Bell Laboratories to calculate the lead and elevation corrections for the guns. With the help of these three technologies, close to 90% of the V-1 missiles, on track to the defence zone around the port, were destroyed.
title: Anti-aircraft warfare
paragraph_text: The BL 18-inch Mk I naval gun was a breech-loading naval gun used by the Royal Navy during World War I. It was the largest and heaviest gun ever used by the British. Only the Second-World-War Japanese 40 cm/45 Type 94 had a larger calibre, , but the British shell was heavier. The gun was a scaled-up version of the BL 15 inch Mk I naval gun and was developed to equip the "large light cruiser" (a form of battlecruiser) . Three guns were built, but they did not see combat with "Furious", before they were removed from her and transferred to the s and for coast bombardment duties. Only 85 rounds were fired in combat operations before the war ended. All three were removed from service in 1920 and served as proving guns for cordite tests. Two were scrapped in 1933 and the last one survived until it was scrapped in 1947.
title: BL 18-inch Mk I naval gun
paragraph_text: He is the younger brother of film director Spike Lee, and has done the still photography for all of his older brother's feature films with the exception of "Get on the Bus" and "He Got Game". Other films he has done still photography for include "The Preacher's Wife", "The Best Man", "Pollock", "Made", "Eternal Sunshine of the Spotless Mind", "American Gangster" and the television series "The Wire".
title: David Lee (still photographer)
paragraph_text: Pre-dreadnoughts carried guns of several different calibres, for different roles in ship-to-ship combat. The main armament was four heavy guns, mounted in two centre-line turrets fore and aft. Very few pre-dreadnoughts deviated from this arrangement. These guns were slow-firing, and initially of limited accuracy; but they were the only guns heavy enough to penetrate the thick armour which protected the engines, magazines, and main guns of enemy battleships.The most common calibre for the main armament was 12-inch (305 mm), although some ships used smaller guns because they could attain higher rates of fire; British battleships from the Majestic class onwards carried this calibre, as did French ships from the Charlemagne class (laid down in 1894). Japan, importing most of its guns from Britain, used 12-inch guns. The United States used both 12-inch (305 mm) and 13-inch (330 mm) guns for most of the 1890s until the Maine class (not to be confused with the earlier Maine of Spanish–American War notoriety), laid down in 1899, after which the 12-inch gun was universal. The Russians used both 12 and 10-inch (254 mm) as their main armament; the Petropavlovsk class, Retvizan, Tsesarevich, and Borodino class had 12-inch (305 mm) main batteries while the Peresvet class  mounted 10-inch (254 mm) guns. The first German pre-dreadnought class used an 11-inch (279 mm) gun but decreased to a 9.4-inch (239 mm) gun for the two following classes and returned to 11-inch guns with the Braunschweig class.
title: Pre-dreadnought battleship
paragraph_text: The song plays during the end credits of the films Full Metal Jacket and The Devil's Advocate. In TV, it was used as the opening theme song to the series Tour of Duty and for the end credits to part five of The Vietnam War documentary series. It was featured in the Call of Duty: Black Ops III and The Mummy trailers. The Pittsburgh Pirates of Major League Baseball use the song as part of their ``Black Out ''promotions. An orchestral arrangement of the song has been used in multiple episodes of the TV series Westworld. R&B singer Ciara would later cover the song for the soundtrack of the 2015 film The Last Witch Hunter.
title: Paint It Black
paragraph_text: Nolan and Joy serve as executive producers, along with J.J. Abrams, Jerry Weintraub, and Bryan Burk. The first season was broadcast between October 2 and December 4, 2016; it comprised ten episodes. In November 2016, HBO renewed the series for a ten - episode second season, which was broadcast from April 22 to June 24, 2018. Westworld's debut on HBO had the network's highest viewership ratings for a premiere since the first episode of True Detective in 2014. Moreover, the series ranks as the most - watched first season of any HBO original series. On May 1, 2018, Westworld was renewed for a third season.
title: Westworld (TV series)
paragraph_text: The modern definition refers to a class of large-caliber (generally .50 or 12.7mm) machine guns, pioneered by John Moses Browning with the M2 machine gun.  These weapons are designed to provide increased range, penetration and destructive power against vehicles, buildings, aircraft and light fortifications beyond the standard rifle calibers used in medium or general-purpose machine gun, or the intermediate cartridges used in light machine guns. In this sense, the "heavy" aspect of the weapon refers to its superior power and range over light- and medium-caliber weapons, in addition to its weight. This class of machine gun came into widespread use during World War II, when the M2 was used widely in fortifications, on vehicles and in aircraft by American forces. A similar HMG capacity was later fielded by the Soviets in the form of Vasily Degtyaryov's DShK in 12.7×108mm. The ubiquitous German MG42 general-purpose machine gun, though well-suited against infantry, lacked the M2's anti-fortification and anti-vehicle capability, a fact that was noted and lamented by the Germans. The continued need for a longer-range machine gun with anti-materiel capability to bridge the gap between exclusively anti-infantry weapons and exclusively anti-materiel weapons has led to the widespread adoption and modernization of the class, and most nations' armed forces are equipped with some type of HMG.
title: Heavy machine gun
paragraph_text: Marcia Gay Harden won the Academy Award for Best Supporting Actress for portraying Lee Krasner, Pollock's wife. Ed Harris received an Academy Award nomination for Best Actor for his portrayal of Pollock. The film was a long-term personal project for Harris based on his previous reading of Pollock's biography.Ed Harris’s father had noticed that he resembled Pollock.
title: Pollock (film)
paragraph_text: After the Dambusters raid in 1943 an entirely new system was developed that was required to knock down any low-flying aircraft with a single hit. The first attempt to produce such a system used a 50 mm gun, but this proved inaccurate and a new 55 mm gun replaced it. The system used a centralised control system including both search and targeting radar, which calculated the aim point for the guns after considering windage and ballistics, and then sent electrical commands to the guns, which used hydraulics to point themselves at high speeds. Operators simply fed the guns and selected the targets. This system, modern even by today's standards, was in late development when the war ended.
title: Anti-aircraft warfare
paragraph_text: The 3-inch gun M1917 was a World War I-era US-made anti-aircraft gun based on the 3-inch gun M1903. It was designed for a fixed mounting and remained in service, primarily at Coast Artillery installations, through World War II. It was determined that the weapon was too heavy and had too much recoil for mobile mountings, so a new weapon based on the lighter and less powerful 3-inch gun M1898 was developed, designated the 3-inch Gun M1918. This was the standard US anti-aircraft gun until replaced by the 3-inch gun M3 in 1930. There is some controversy as to whether any seacoast guns were actually converted into anti-aircraft guns in the development of these weapons.
title: 3-inch gun M1903
paragraph_text: Gun laws in Pennsylvania regulate the sale, possession, and use of firearms and ammunition in the Commonwealth of Pennsylvania in the United States.
title: Gun laws in Pennsylvania
paragraph_text: As of December 2014, the US Filet - O - Fish contains a battered, fried fish fillet made from Alaska pollock. In the Republic of Ireland either hoki or Alaska pollock may be served. In New Zealand and the United Kingdom Filet - O - Fish contains hoki instead of Alaska pollock. McDonald's Canada, United States, United Kingdom, Australia, New Zealand, Portugal, Czech Republic, The Netherlands and Hong Kong use a half slice of cheese in each Filet - O - Fish sandwich.
title: Filet-O-Fish
paragraph_text: The LeMat revolver was a. 42 or. 36 caliber cap & ball black powder revolver invented by Jean Alexandre LeMat of New Orleans, which featured an unusual secondary 20 gauge smooth - bore barrel capable of firing buckshot. It saw service with the armed forces of the Confederate States of America during the American Civil War of 1861 -- 65 and the Army of the Government of National Defense during the Franco - Prussian War.
title: LeMat Revolver
paragraph_text: The QF 3-pounder Hotchkiss or in French use Canon Hotchkiss à tir rapide de 47 mm were a family of long-lived light naval guns introduced in 1886 to defend against new, small and fast vessels such as torpedo boats and later submarines. There were many variants produced, often under license which ranged in length from 32 to 50 calibers but 40 caliber was the most common version. They were widely used by the navies of a number of nations and often used by both sides in a conflict. They were also used ashore as coastal defense guns and later as an anti-aircraft gun, whether on improvised or specialized HA/LA mounts.
title: QF 3-pounder Hotchkiss
paragraph_text: The Canon de 75 mle GP II was a field gun used by Belgium during World War II. Cockerill mounted lengthened Canon de 75 mle TR barrels on ex-German 7.7 cm FK 16 gun carriages received as reparations after World War I. After 1940, the Wehrmacht designated captured guns as the 7.5 cm FK 234(b) and used them to equip occupation units in Belgium.
title: Canon de 75 mle GP II
paragraph_text: The Thompson submachine gun is an American submachine gun invented by John T. Thompson in 1918 which became infamous during the Prohibition era, being a signature weapon of various crime syndicates in the United States. It was a common sight in the media of the time, being used by both law enforcement officers and criminals. The Thompson submachine gun was also known informally as the "Tommy Gun", "Tôm Sông", "Annihilator", "Chicago Typewriter", "Chicago Submachine", "Chicago Piano", "Chicago Style", "Chicago Organ Grinder", "Trench Broom", "Trench Sweeper", "Drum Gun","The Chopper", and simply "The Thompson".
title: Thompson submachine gun

Reasoning steps:
Pollock >> director >>>> Ed Harris
what gun does Ed Harris used in westworld >>>> LeMat revolver

Answer: spans: LeMat revolver