Please answer the following question: Information: - The European Broadcasting Union (EBU) is an alliance of public service media entities, established on 12 February 1950. As of 2015, the organisation comprises 73 active members in 56 countries, and 34 associate members from a further 20 countries. Most EU states are part of this organisation and therefore EBU has been subject to supranational legislation and regulation. It also hosted debates between candidates for the European Commission presidency for the 2014 parliamentary elections but is unrelated to the institution itself. It is best known for producing the Eurovision Song Contest. EBU is a member of the International Music Council. - The Eurovision Song Contest 2003 was the 48th annual Eurovision Song Contest. The contest took place in Riga, Latvia on 24 May 2003, following Marie N's win in the 2002 contest with the song "I Wanna". It was the first win and hosting of the competition for Latvia with only their third participation after debuting at the 2000 contest. Latvijas Televzija (LTV) chose the Skonto Hall as the venue after conducting a bidding process among several cities and venues in Latvia. The hosts for the contest were the previous year's winner Marie N and former Latvian representative at the 2000 contest, Renrs Kaupers, who competed in the contest as part of the band Brainstorm. The design of the contest was built around the theme "Magical rendez-vous", which represented the meeting of the various European nations coming to Latvia and encountering Latvia's versatile landscapes. Twenty-six countries participated, which saw the return of Iceland, Ireland, Netherlands, Norway and Poland after having been relegated from competing the previous year, Portugal returning to the contest after withdrawing the previous year, while Ukraine participated in the contest for the first time. Denmark, Finland, Lithuania, Macedonia and Switzerland were required to withdraw due to their poor results in the 2002 contest. - The Festival della canzone italiana di Sanremo (in English: "Italian song festival of Sanremo") is the most popular Italian song contest and awards, held annually in the city of Sanremo, in Italy, and consisting of a competition amongst previously unreleased songs. Usually referred to as Festival di Sanremo, or outside Italy as Sanremo Music Festival or Sanremo Music Festival Award, it was the inspiration for the Eurovision Song Contest. - "Feeling Alive" was the Cypriot entry in the Eurovision Song Contest 2003, performed in English by Stelios Konstantas. - Stylianos ( Stelios ) Constantas ( Greek : ) is a Cypriot - born singer . He participated in two Cypriot national finals for the Eurovision Song Contest , coming second in 1997 with I grammitis ntropi , and fourth in 1999 with Methysmeno feggari . In 2003 , he performed the song '' Feeling Alive '' as the Cypriot entry for the Eurovision Song Contest , finishing 20th in the competition . He has released one album and a single through V2 Records . Constantas was born in Larnaca . In 2002 , he moved to Greece with his wife and three children , this to further his career . - The Eurovision Song Contest, sometimes popularly called Eurovision but not to be confused with the Eurovision network that broadcasts it, is the longest-running annual international TV song competition, held, primarily, among the member countries of the European Broadcasting Union (EBU) since 1956. The competition was based upon the existing Sanremo Music Festival held in Italy since 1951. Given the paragraphs above, decide what entity has the relation 'participant of' with 'eurovision song contest 2003'.
A:
stelios constantas