Question: Are Monte Melkonian and Vanes Martirosyan both boxers?

Context articles: Monte Melkonian
Crookes radiometer
James Melkonian
Freddie Roach (boxing)
Flexible impeller
My Brother's Road
Rotary vane pump
Ellehammer helicopter
Vanes Martirosyan
Ashot Melkonian

Monte Melkonian (classical Armenian: Մոնթէ Մելքոնեան ; reformed: Մոնթե Մելքոնյան; November 25, 1957 – June 12, 1993) was an Armenian left-wing nationalist militant, revolutionary, and commander.
 He was the leader of an offshoot of the Armenian Secret Army for the Liberation of Armenia (ASALA) in the 1980s and the most celebrated commander during the Nagorno-Karabakh War in the early 1990s.
The Crookes radiometer, also known as a light mill, consists of an airtight glass bulb, containing a partial vacuum.
 Inside are a set of vanes which are mounted on a spindle.
 The vanes rotate when exposed to light, with faster rotation for more intense light, providing a quantitative measurement of electromagnetic radiation intensity.
 The reason for the rotation was a cause of much scientific debate in the ten years following the invention of the device, but in 1879 the currently accepted explanation for the rotation was published.
 Today the device is mainly used in physics education as a demonstration of a heat engine run by light energy.
James Melkonian is an American screenwriter and film director.
 He wrote and directed the films "The Stoned Age" and "".
 Melkonian is also an advertising writer, producer and director.
Frederick Steven "Freddie" Roach (born March 5, 1960) is an American boxing trainer and former professional boxer.
 Roach is widely regarded as one of the best boxing trainers of all time.
 He is the enduring boxing coach of the eight-division world champion Manny Pacquiao, five-time and four-division World Champion Miguel Cotto, former WBC Middleweight Champion Julio César Chávez, Jr., defensive master and three-time world champion James Toney, former UFC Welterweight Champion Georges St-Pierre, as well as top prospects Jose Benavidez, Peter Quillin, and Vanes Martirosyan.
 Roach was the trainer of former two-time world champion and notable women's champion Lucia Rijker.
 He has also trained former junior welterweight champion Amir Khan.
A flexible impeller pump is a positive-displacement pump that, by deforming impeller vanes, draws the liquid into the pump housing and moves it to the discharge port with a constant flow rate.
 The flexibility of the vanes enables a tight seal to the internal housing, making the pump self-priming, while also permitting bi-directional operation.
 The output from these pumps tends to be smooth or gentle when compared to the operation of a reciprocating pump (for example).
 In 1938, Arthur M. Briggs filed a patent for this type of pump.
My Brother's Road: An American's Fateful Journey to Armenia is a biography and memoir about the American-born Armenian, Monte Melkonian (1957 – 1993).
A rotary vane pump is a positive-displacement pump that consists of vanes mounted to a rotor that rotates inside of a cavity.
 In some cases these vanes can have variable length and/or be tensioned to maintain contact with the walls as the pump rotates.
 It was invented by Charles C. Barnes of Sackville, New Brunswick, who patented it on June 16, 1874.
 There have been various improvements, including a variable vane pump for gases (1909)
The Ellehammer helicopter was an otherwise-unnamed experimental aircraft built in Denmark in 1912.
 Based on experiments with models, Jacob Ellehammer constructed a full-size machine equipped with two contra-rotating discs, each of which was fitted with six vanes around its circumference.
 The pitch of these vanes could be varied in operation by the pilot, an early example of cyclic control.
 The same engine that drove the rotors also powered a propeller mounted tractor-wise to the aircraft's frame.
Vanes Martirosyan (Armenian: Վանես Մարտիրոսյան ; born May 1, 1986) is an Armenian-American professional boxer.
 He has challenged twice for a light middleweight world title, in 2013 and 2016, and held the WBC Silver light middleweight title from 2011 to 2012.
Ashot Melkonian (Armenian: Աշոտ Անատոլիի Մելքոնյան ; March 1, 1930 – December 9, 2009) was an Armenian artist associated with Neorealistic artistic style and Honorary Artist of the Republic of Armenia.
 He mainly devoted himself to landscape and portraits painting, as well as murals.
 He is one of the founders of Neorealism in Armenian art.
 Art critic Shahen Khachatrian referred to Melkonian as "an artist of the generation of the 1960s that provided a new impetus to the development of Armenian art.
 Reality is a characteristic feature of Ashot's art".
 Honorary artist of Armenia Hakob Hakobian referring to Melkonian wrote "a brilliant composer of scenes, an author of exquisite portraits and landscapes, a maseter of gentlest and subtlest painting ... Melkonian is the pride of our painting school."