Question: Liam Smith, is a British professional boxer, Liam is the younger brother of Paul Smith and who, a British professional boxer, and is the current WBC Silver super featherweight champion?

full_context: Document 1: Liam Smith (boxer): Liam Smith (born 27 July 1988) is a British professional boxer. He held the WBO light-middleweight title from 2015 to 2016, having previously held the Commonwealth light-middleweight title from 2012 to 2013, and the British light-middleweight title from 2013 to 2015. Liam is the younger brother of Paul Smith and Stephen Smith, and the older brother of Callum Smith; all of whom are also professional boxers.
Document 2: Stephen Smith (boxer): Stephen Francis Smith (born 22 July 1984 is a British professional boxer. He is the current WBC Silver super featherweight champion and a former British featherweight and British super featherweight champion, he is also a former Commonwealth featherweight champion.
Document 3: Joe Smith Jr.: Joe Smith Jr. (born September 20, 1989) is an American professional boxer who held the regional WBC International light heavyweight title from 2016 to 2017. He rose to prominence in 2016 by scoring an upset knockout victory over Andrzej Fonfara, and later becoming the first boxer to score a stoppage victory over former world champion Bernard Hopkins, who retired after their fight.
Document 4: James DeGale: James Frederick DeGale, {'1': ", '2': ", '3': ", '4': "} (born 3 February 1986) is a British professional boxer. He has held the IBF super-middleweight title since 2015, having previously held the British super-middleweight title from 2010 to 2011, and the European super-middleweight title from 2011 to 2012. As of May 2017, he is ranked as the world's best super-middleweight by "The Ring" magazine and the Transnational Boxing Rankings Board, and third by BoxRec. As an amateur, DeGale represented Great Britain at the 2008 Olympics, winning a gold medal in the middleweight division. By later becoming IBF champion, he became the first British boxer ever to have won both an Olympic gold medal and a professional world title.
Document 5: Darkie Smith: John "Darkie" Smith (born 1942) is a British former boxer, now employed in boxing training and boxing matchmaking. By birth a Romany Gypsy, Darkie fought in the UK until the age of 30. He served an apprenticeship under the pro trainer George Francis before setting out on his own. Smith has worked as a trainer in the UK, France, Spain, Majorca, the USA and Germany. Fighters trained to world titles include heavyweight Herbie Hide, light heavyweight and cruiserweight Fabrice Tiozzo, super middleweight Christophe Tiozzo and light welterweight Stephen Smith. He has also trained European, Commonwealth and British champions, and worked with other future champions during the early stages of their careers. These fighters include European Heavyweight Champion Zeljko Mavrovic and future world champion Chris Eubank. Darkie's work with Mavrovic drew much attention. Mavrovic was trained exclusively by Smith for five years, winning and defending his European title and finishing with a record of one defeat in thirty bouts. The one defeat amounted to a points decision against world champion Lennox Lewis, in a bout that saw Mavrovic concede a significant weight advantage.
Document 6: Sam Eggington: Sam Eggington (born 15 October 1993) is a British professional boxer. He is the current European welterweight champion. He was the British and Commonwealth welterweight champion, as well as the former BBBofC Midlands (England) Area, British Masters Silver and WBC International Silver welterweight titleholder.
Document 7: Scott Quigg: Scott Quigg (born 9 October 1988) is a British professional boxer. He held the WBA (Regular) super-bantamweight title from 2013 to 2016, and the British super-bantamweight title from 2011 to 2012. As of May 2017, he is ranked as the world's fourth best featherweight by BoxRec, and eighth by the Transnational Boxing Rankings Board.
Document 8: John Murray (boxer): John Murray (born 20 December 1984) is a British former professional boxer who competed from 2003 to 2014. He held the English lightweight title from 2007 to 2008; the British lightweight title twice, from 2008 to 2010; and the European lightweight title from 2010 to 2011. He also challenged once for the vacant WBA lightweight title in 2011. John is the brother of British former Olympian Joe Murray. Since retiring, Murray has opened his own gym – Murray Machines Gymnasium – in Reddish, where he trains both amateur and professional boxers.
Document 9: Scott Dixon (boxer): "Super" Scott Dixon ( (1976--) 28 1976 (age (2017)-(1976)-((11)<(09)or(11)==(09)and(30)<(28)) ) ) born in Hamilton is a Scottish professional feather/super feather/light/light welter/welter/light middle/middle/super middleweight boxer of the 1990s, 2000s and 2010s, who won the British Boxing Board of Control (BBBofC) Scottish Area welterweight title, World Boxing Board (WBB) welterweight title, World Boxing Union (German Version) super middleweight title, and Commonwealth welterweight title, and was a challenger for the World Athletic Association (WAA) welterweight title against Michael Carruth, BBBofC British welterweight title against Derek Roche, World Boxing Federation (WBF) light middleweight title against Steve Roberts, World Boxing Organization (WBO) Inter-Continental light middleweight title against Anthony Farnell, and World Boxing Union (WBU) light middleweight title against Mehrdad Takalobigashi, his professional fighting weight varied from 125 lb , i.e. featherweight to 167+1/2 lb , i.e. Super middleweight.
Document 10: Amir Khan (boxer): Amir Iqbal Khan (born 8 December 1986) is a British professional boxer. He is a former unified light-welterweight world champion, having held the WBA (later Super) title from 2009 to 2012, and the IBF title in 2011. Additionally he held the Commonwealth lightweight title from 2007 to 2008, the WBC Silver welterweight title from 2014 to 2016, and has challenged once for a middleweight world title in 2016.
Document 11: Lucas Matthysse: Lucas Martin Matthysse (born September 27, 1982) is an Argentine professional boxer. He held the WBC interim super lightweight title from 2012 to 2013, and has challenged twice for a world title in 2013 and 2015. Matthysse is known for his aggressive pressure fighting style and formidable punching power. His older brother is former professional boxer Walter Matthysse.
Document 12: Bruce Scott (boxer): Bruce "Lionheart" Scott ( (1969--) 16 1969 (age (2017)-(1969)-((11)<(08)or(11)==(08)and(30)<(16)) ) ) is a Jamaican/British professional light heavy/cruiserweight boxer of the 1990s and 2000s, who won the British Boxing Board of Control (BBBofC) Southern Area cruiserweight title, BBBofC British cruiserweight title, and Commonwealth cruiserweight title (twice), and was a challenger for the Commonwealth light heavyweight title against Nicky Piper, World Boxing Organization (WBO) cruiserweight title against Johnny Nelson, World Boxing Council (WBC) cruiserweight title against Juan Carlos Gómez, Commonwealth cruiserweight title against Adam Watt, and World Boxing Union (WBU) cruiserweight title against Enzo Maccarinelli, his professional fighting weight varied from 173 lb , i.e. light heavyweight to 199+1/4 lb , i.e. cruiserweight.
Document 13: Dean Francis: Dean "Star" Francis ( (1974--) 23 1974 (age (2017)-(1974)-((11)<(01)or(11)==(01)and(30)<(23)) ) ) is an English professional super middle/light heavy/cruiserweight boxer of the 1990s, 2000s and 2010s who has won the British Boxing Board of Control (BBBofC) British super middleweight, BBBofC English cruiserweight title, European Boxing Union (EBU) super middleweight title, World Boxing Organization (WBO) Inter-Continental super middleweight title, International Boxing Organization (IBO) Inter-Continental light heavyweight title, BBBofC British light heavyweight title, British Masters light-heavy title, and Commonwealth super middleweight title, and was a challenger for the World Boxing Council (WBC) International super middleweight title against Jaffa Ballogou, BBBofC British super middleweight title against Matthew Barney, his professional fighting weight has varied from 167 lb , i.e. super middleweight to 181 lb , i.e. cruiserweight.
Document 14: Chris Eubank Jr.: Christopher Livingstone "Chris" Eubank Jr. (born 18 September 1989) is a British professional boxer. He has held the IBO super-middleweight title since February 2017, having previously held the WBA interim and British middleweight titles between 2015 and 2016. As of July 2017, Eubank Jr. is ranked as the world's second best super middleweight by BoxRec, sixth by the Transnational Boxing Rankings Board, and seventh by "The Ring" magazine. He is the son of former two-weight world boxing champion Chris Eubank.
Document 15: Paul Smith (boxer): Paul Smith Jr. (born 6 October 1982) is a British professional boxer. He held the English middleweight title in 2008; the British super-middleweight title twice between 2009 and 2014; and has challenged three times for a super-middleweight world title.
ground_truth: Stephen Smith