Please answer the following question: Information: - Verena Carmen Rehm, born 14 May 1984 in Neuburg, Bavaria, is best known as the backing vocalist and pianist of the Eurodance dance group Groove Coverage. She has many song writing credits both within and outside the group and also sings for many other German dance acts. - '' 7 Years and 50 Days '' is the third single and title track from the album 7 Years and 50 Days by German trance group Groove Coverage . - 7 Years and 50 Days is the second album of the German Euro-trance band Groove Coverage, released in 2004. Several versions of the album were released, most significant being the 'second edition' (or the 'limited edition'), which replaced "Fragezeichen" with "She" and included a bonus track as well as a thong looking like that worn by the girl on the cover of the band's single God Is A Girl. Other versions differ from country to country. - Groove Coverage is a German dance band which consists of Axel Konrad, DJ Novus, Melanie Munch, better known as Mell (lead singer), and Verena Rehm (former stage performer, backing singer, occasional lead singer). Producers of the band are Ole Wierk and Axel Konrad. The project was founded in the summer of 2001 by DJ Novus, in co-operation with Suprime Music (Konrad). With eleven singles in the German Top 50 and over 13 million records sold worldwide, Groove Coverage is one of the most successful German dance artists. - Melanie Munch, (born August 4, 1981), better known by the stage name Mell, is a German singer, best known for being the lead singer of dance group Groove Coverage. - "God Is a Girl" is the third and final single from German trance group Groove Coverage's debut album, "Covergirl". After reading the paragraphs above, we are interested in knowing the entity with which '7 years and 50 days ' exhibits the relationship of 'instance of'. Find the answer from the choices below. Choices: - album - august - band - dance - edition - final - god - limited - may - name - operation - single - song - stage - track - writing
Answer:
song