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?
Sentence (from "Ça Ira (opera)"): It is an opera in three acts and a concept album.
Relevant evidence: Yes