Given the question: Information: - Sergio Godinho, is a Portuguese poet, composer, and singer. He was born on August 31, 1945 in Porto, Portugal, and is one of the most influential popular musicians in Portugal. He's often considered the greatest name of the Portuguese popular music, after Zeca Afonso, even if their music styles are quite different, and Sergio Godinho songs are often more of an urban style. - Erasure are an English synthpop duo, consisting of singer and songwriter Andy Bell and songwriter and keyboardist Vince Clarke. They formed in London, and entered the music scene in 1985 with their debut single "Who Needs Love Like That". Following the release of their fourth single "Sometimes", the duo established itself on the UK Singles Chart and became one of the most successful artists of the late 1980s to mid-1990s. - Only Pain Is Real was the second album by the Portuguese pop band Silence 4. It was released in July 2000, after the huge success of his predecessor, "Silence Becomes It". Recorded in London, the album showed new sounds and orchestrations, with 14 songs, all in English. Even not equaling their first album, it went to become another massive success for the band, achieving two platinum albums and selling 100 000 unities. Considered one of the best Portuguese pop albums ever made, if not the best, "Only Pain Is Real" is also a reminder of what Silence 4 could have done more. - London is the capital and most populous city of England and the United Kingdom, as well as the most populous city proper in the European Union. Standing on the River Thames in the south east of the island of Great Britain, London has been a major settlement for two millennia. It was founded by the Romans, who named it "Londinium". London's ancient core, the City of London, largely retains its medieval boundaries. Since at least the 19th century, "London" has also referred to the metropolis around this core, historically split between Middlesex, Essex, Surrey, Kent, and Hertfordshire, which today largely makes up Greater London, governed by the Mayor of London and the London Assembly. - Rui Costa is a Portuguese musician . He played bass , acoustic and electric guitar for Silence 4 , and is also credited for the co-writing of some songs in their albums , '' Silence Becomes It '' and '' Only Pain Is Real '' . After Silence 4 went into a hiatus , he announced that he was leaving the band in January 2003 . Since then Rui Costa has been involved in other musical projects . - Silence Becomes It was the debut album for Portuguese pop / alternative music band Silence 4, launched in June 1998. The album had a huge success in Portugal, reaching a six-time platinum album level (240 000 unities sold), but didn't have the international success that some critics and fans predicted. The album has 15 songs, including a hidden track, and two versions of "A Little Respect" by Erasure. Most of the songs are in English, with only two in Portuguese, "Sextos Sentidos", a duet with Sergio Godinho, and "Eu Nao Sei Dizer". The songs deal with themes of love, pain, melancholy, loss, death, sorrow, loneliness and nostalgia, themes that are recurrent in Silence 4 and David Fonseca solo career discography. Both "Borrow" and "My Friends" were highly successful singles. Given the information above, choose from the list below the object entity that exhibits the relation 'country of citizenship' with the subject 'rui costa '. Choices: - london - portugal - united kingdom
The answer is:
portugal