In this task, you are given a context, a subject, a relation, and many options. Based on the context, from the options select the object entity that has the given relation with the subject. Answer with text (not indexes).

Context: Dori Ghezzi ( born 30 March 1946 ) is an Italian singer who was active as a recording artist between 1966 and 1989 . In the 1970s , Ghezzi worked mainly in a duo with American singer Wess , and the couple represented Italy in the 1975 Eurovision Song Contest ., 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, 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., The Eurovision Song Contest 1975 was the 20th edition of the contest hosted by SR and held in Stockholm, Sweden. The arena for the event was the newly built Stockholmsmässan in Älvsjö in southern Stockholm. ABBA's victory in Brighton the previous year gave Sweden the right to host the contest for the first time. The Contest was won by Teach-In, who sang "Ding-a-dong" in English, representing the Netherlands., Wesley Johnson known by his stage name Wess (August 13, 1945  September 21, 2009) was an American-born Italian singer and bass guitarist, perhaps mostly known for representing Italy along with Dori Ghezzi in the Eurovision Song Contest 1975 in Stockholm, Sweden, placing third. He formed a successful duo with Ghezzi and achieved some hits in Italy, such as "Voglio stare con te", "Come stai? Con chi sei?" and "Un corpo e un'anima". Wess also was a singer and played bass guitar for the funk-soul band Wess & The Airedales in the 1960s and early 1970s.
Originally from North Carolina, Wess moved to Italy in the 1960s in pursuit of a musical career. Wess died in New York during his United States tour when a breathing crisis led to his death
. He was the father of UK-based R'n'B singer Romina Johnson, who often accompanied him as a backing singer., 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., Subject: dori ghezzi, Relation: participant_of, Options: (A) eurovision song contest (B) eurovision song contest 1975 (C) sanremo music festival
eurovision song contest 1975