Question: Obafemi Martins scored one goal in in Birmingham City F.C.'s 2011 final win against Arsenal, what is the nationality of the other goal-scorer?

Context paragraphs:
2010–11 Birmingham City F.C. season: The 2010–11 season was Birmingham City Football Club' s seventh season in the Premier League and their 57th in the top tier of English football.  It ran from 1 July 2010 to 30 June 2011.  Led by former Scotland national team manager Alex McLeish, the team finished in 18th place in the league, thus being relegated to the Championship for the 2011–12 season.  They reached the quarter-final of the FA Cup and won the League Cup, their first major trophy since 1963, by beating favourites Arsenal 2–1 in the final with goals from Nikola Žigić and Obafemi Martins.  The League Cup win brought Birmingham qualification for the 2011–12 UEFA Europa League, their first appearance in European competition since 1961.  The top scorer for the season was Craig Gardner with ten goals in all competitions, of which eight were in the Premier League.  McLeish resigned as manager on 12 June 2011.

Abu Dhabi United Group: The Abu Dhabi United Group for Development and Investment (ADUG), مجموعة أبوظبي الاتحاد للتنمية والاستثمار,' is a United Arab Emirates (UAE) based private equity company owned by Sheikh Mansour bin Zayed Al Nahyan, member of the Abu Dhabi Royal Family and Minister of Presidential Affairs for the UAE.  The primary interest of the group is its ownership of City Football Group, a worldwide organisation most notably controlling Manchester City F.C, Melbourne City F.C and New York City F.C., as well as several other international football clubs, although it holds interests in various other endeavours outside of the sporting world also.

Albert Kinsey: Albert John Kinsey (born 19 September 1945) was an English footballer.  His regular position was as a forward.  He was born in Liverpool.  He played for Manchester United and Wrexham.  Albert Kinsey played a major role in Wrexham's promotion to League Division 3 in season 1969-1970, finishing as joint leading scorer in the Football League, with 26 goals.  Three years later, he became the first player to score a goal in European competition for Wrexham, helping them to draw 1-1 at F.C.Zurich, who were eventually defeated 3-2 on aggregate.  He later joined Crewe Alexandra before dropping into non-league football with Wigan Athletic, where he scored one goal in five Northern Premier League games in the 1973–74 season.

2007 São Paulo FC season: The 2007 season was São Paulo's 78th season of the club's existence.  After being a national champions in the previous year, them team qualified to the Copa Libertadores and Copa Sudamericana.  "Tricolor" took a place on the iemifinals of Campeonato Paulista, but was eliminated by São Caetano with a rout in his home stadium in the second leg after drawing in 1-1 on away, was defeated by 4-1.  In the Copa Libertadores for the fourth year's participation sequence, "Tricolor" was eliminated in Round of 16 losing to Grêmio in aggregated score.  While played the Campeonato Brasileiro, São Paulo participated in Copa Sudamericana.  With two draws against Figueirense the group advanced on away goal rule to Round 16 when eliminated the Argentine current champions of Copa Libertadores, Boca juniors, also in away goal rule, after scored one goal in La Bombonera in the loss by 2-1, "Tricolor" won in Morumbi with a single goal scored by Aloísio.  However in the quarterfinals was eliminated with two losses for Colombians Millonarios.  Playing only the national league the club rising the fifth title in 31 October, on 34th round, behind the victory over América-RN for 3-0 in Morumbi.  The team became a champions with a record of 23 wins, 8 draws, 7 losses and keeping the best defence of league, only 19 goals conceded in 38 matches.

Birmingham City L.F.C.: Birmingham City Ladies F.C. is an English women's football club affiliated with Birmingham City F.C..  As founding members of the FA Women's Super League in 2011, the team plays in the highest division of women's football in England.  The team plays their home games at Damson Park, the home of Solihull Moors F.C..

Nikola Žigić: Nikola Žigić (, ] ; born 25 September 1980) is a former Serbian international footballer who played as a centre forward.

Doug Rudham: Doug Rudham (3 May 1926 - 13 August 1991) was a South African footballer who played as a goalkeeper for Liverpool F.C. in The Football League.  Rudham signed for Liverpool after impressing their staff while he was on tour in England with the South African national team.  Rudham became first-choice goalkeeper during the 1954–55 season, despite conceding nine goals in a defeat to Birmingham City F.C..  The next seasons saw Rudham lose his place in the Liverpool goal following the arrival of Tommy Younger from Hibernian F.C..  He made only six appearances during his next three seasons at the club and left in May 1960.

Himson Teleda: Himson Teleda (born 28 August 1992) is a footballer comes from Solomon Islands.  He plays as a midfielder for Western United FC in Solomon Islands National Club Championship.  He is a member of Solomon Islands national football team.  He made his debut during the 2012 OFC Nations Cup and he scored one goal against New Zealand.  In stage 3 he scored one goal against Tahiti.

John Collins (footballer, born 1949): Collins began his career as an apprentice with Tottenham Hotspur in March 1966.  The full back played two first class matches for the "Spurs".  He signed for Portsmouth in May 1971 and went on to compete in 74 matches.  After leaving Fratton Park, Collins joined the North American Soccer League team Dallas Tornado in 1974 and featured in 18 matches and scored one goal.  Collins was transferred to Halifax Town in August 1974 and featured in a further 82 games and scored one goal.  He had a spell with Sheffield Wednesday where he notched up seven appearances in 1976 before signing for Barnsley in December 1976.  Between 1976–79 he played 130 matches for the Yorkshire club and netted one goal.  Collins ended his senior career at Kidderminster Harriers.

Ian Rodgerson: Ian Rodgerson (born 9 April 1966) is an English former professional association footballer who played as a right-back or midfielder.  He played more than 500 games in the lower divisions of the Football League and in the Conference.  In all competitions he made more than 100 appearances for Birmingham City, nearly 200 (in two spells) for Cardiff City, and more than 300 for home-town club Hereford United.  He went on to qualify as a chartered physiotherapist, going on to work in that capacity for Birmingham City F.C.'s Youth Academy and for Forest Green Rovers F.C. Rodgerson left his position at Forest Green in June 2010.  Rodgerson returned to Edgar Street in June 2011 to become the club's new physiotherapist.

Supporting paragraphs: 2010–11 Birmingham City F.C. season Nikola Žigić
Answer: Serbian