question: What boxing title did Walter Matthysse's brother hold from 2012 to 2013?
answer: WBC interim super lightweight title
context: Title: Andrew Jeptha
  Passage: Andrew Daries Jeptha (born 30 December 1879) was the first black boxer to win a British boxing title, winning the welterweight title in London on 25 March 1907.  However, Jeptha is not often recognised as the first black British boxing champion.
  Title: Lucas Matthysse
  Passage: 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.
  Title: Panama Joe Gans
  Passage: Panama Joe Gans was a black boxer who held the World Colored Middleweight Championship for four years, shortly before it was discontinued.  Born Cyril Quinton Jr. on November 14, 1896 in Barbados, British West Indies and raised in the Panama Canal Zone, the 5'7" Quinton originally fought out of Panama and then New York City.  He took his ringname from boxing great Joe Gans, the first black American fighter to win a world boxing title.  He found his greatest fame fighting as a middleweight at between 147 and 160 lbs, but in his early career he took the Panamanian Lightweight Title and contended for the Panamanian Welterweight Title at weights roughly between 130 and 147 pounds.
  Title: Billy Petrolle
  Passage: William "Billy" Michael Petrolle (January 10, 1905 – May 14, 1983) was a world lightweight boxing title contender.  Boxing ran in the Petrolle family as his brothers Pete and Frank also shared his occupation.  Statistical boxing website BoxRec lists Petrolle as the #18 ranked lightweight of all-time.  Petrolle is member of the Minnesota Boxing Hall of Fame, the Ring Magazine Hall of Fame, the World Boxing Hall of Fame, and the International Boxing Hall of Fame.
  Title: Walter Matthysse
  Passage: Walter Dario Matthysse (born August 29, 1978) is an Argentine former professional boxer who competed from 2002 to 2009, and challenged once for the IBF welterweight title in 2007.  He is the elder brother of professional boxer Lucas Matthysse.
  Title: Gene Schoor
  Passage: Eugene R. (Gene) Schoor (July 26, 1914 – December 13, 2000) was a New York-based author, journalist, ghost-writer, college boxing instructor (New York University, the University of Minnesota, and City College of New York), Florida state amateur boxing title holder, Navy Public Information Officer, public relations man, sports agent, boxing promoter, and restaurateur.  He is best known as the author of "juvenile" sports biographies.
  Title: Zolani Marali
  Passage: Zolani Marali is a South African lightweight boxer (born 5 May 1977).  He was born in Eastern Cape, South Africa.  Marali won a bronze medal in the flyweight category at the 1999 All-Africa Games in Johannesburg.  In April 2009, he won the International Boxing Organization (IBO) superfeatherweight boxing title after defeating Gamaliel Diaz.  He had previously won the titles for World Boxing Foundation super bantamweight and super featherweight as well as IBO super bantamweight.
citations: Walter Matthysse Lucas Matthysse