Question: Is This the Life We Really Want?, is the fifth studio album by English rock musician and former Pink Floyd bassist and vocalist Roger Waters, it was his first studio album in 12 years since Ça Ira, is the fourth studio album by Waters, it is an opera in how many acts?

Related documents: [0]  [DOC] Is This the Life We Really Want? (stylised as is this the life we really want?) is the fifth studio album by English rock musician and former Pink Floyd bassist and vocalist Roger Waters, released on 2 June 2017 by Columbia Records. It is his first solo album in nearly 25 years since "Amused to Death" (1992), as well as his first studio album in 12 years since "Ça Ira" (2005). On 20 April, the single "Smell the Roses" was released. [END] 
[1]  [DOC] Ça Ira (French for "It'll be fine", subtitled "There is Hope") is the fourth studio album by Roger Waters. It is an opera in three acts and a concept album. The album is based on the French libretto co-written by Étienne and Nadine Roda-Gil on the historical subject of the early French Revolution. "Ça Ira" was released 26 September 2005, as a double CD album featuring baritone Bryn Terfel, soprano Ying Huang, and tenor Paul Groves. The album received mixed reviews, with critics praising the composition but criticising its plot and simplicity. [END]  
Answer: three
three