Question: Which band worked with Yoko Ono and John Lennon in their 1972 album that sparked controversy at the time due to its title and subject matter?
Context: John Lennon Museum (ジョン・レノン・ミュージアム , Jon Renon Myūjiamu ) was a museum located inside the Saitama Super Arena in Chūō-ku, Saitama, Saitama Prefecture, Japan.  It was established to preserve knowledge of John Lennon's life and musical career.  It displayed Lennon's widow Yoko Ono's collection of his memorabilia as well as other displays.  The museum opened on October 9, 2000, the 60th anniversary of Lennon’s birth, and closed on September 30, 2010, when its exhibit contract with Yoko Ono expired.  A tour of the museum began with a welcoming message and short film narrated by Yoko Ono (in Japanese with English headphones available), and ended at an avant-garde styled "reflection room" full of chairs facing a slide show of moving words and images.  After this room there was a gift shop with John Lennon memorabilia available. Sweet Toronto (sometimes referred as Sweet Toronto Peace Festival) is a documentary by D.A. Pennebaker of the Toronto Rock and Roll Revival, a one-day festival held September 13, 1969 at Varsity Stadium on the campus of the University of Toronto and attended by some 20,000 persons.  The event was produced by John Brower and Ken Walker.  John Lennon played as part of the Plastic Ono Band, whose members also included Yoko Ono, Klaus Voorman, Alan White, and Eric Clapton.  (Their set was released as the album "Live Peace in Toronto 1969".)  The video also features a selection of other acts: Jerry Lee Lewis, Little Richard, and Bo Diddley.  The actual concert lasted twelve hours, but Pennebaker's documentary focuses mainly on the final hours of the concert.  At the time of the performance Yoko Ono's popularity was sufficiently low that the audience booed and left the Plastic Ono Band performance.  There was a similar response from film reviewers at the time.  The performances "and this film have grown in interest and watchability since that time, particularly given the rarity of such thorough documentation of these key performers' work in concert." Yoko Ono/Plastic Ono Band is the avant-garde debut studio album by Yoko Ono.  The album came after recording three experimental releases with John Lennon and a live album as a member of The Plastic Ono Band. "Sisters, O Sisters," also known as "Sisters O Sisters," is a song written by Yoko Ono that first appeared on John Lennon's and Yoko Ono's 1972 album "Some Time in New York City", backed by Elephant's Memory.  It was also released as the b-side to the couple's "Woman Is the Nigger of the World" single.  It has also been covered by a number of artists, including Le Tigre and Tater Totz. "Woman Is the Nigger of the World" is a song written by John Lennon and Yoko Ono from their 1972 album "Some Time in New York City".  Released as a single in the United States, the song sparked controversy at the time due to its title and subject matter. "Isolation" is a 1970 song appearing on John Lennon's first official solo album release, "John Lennon/Plastic Ono Band".  It ends side one of the album, and is the fifth track.  In the Philippines Apple Records released "Isolation" as the b-side to "Mother", the single off "John Lennon/Plastic Ono Band", in contrast to most countries where the b-side was Yoko Ono's "Why."  It was also released on an EP in Mexico along with "Mother," "Look at Me'" and "My Mummy's Dead." "Happy Xmas (War Is Over)" is a Christmas song with lyrics by John Lennon and Yoko Ono, released in 1971 as a single by John & Yoko/Plastic Ono Band with the Harlem Community Choir.  The lyrics are set to the traditional English ballad "Skewball".  It was the seventh single release by Lennon outside of his work with the Beatles.  The song reached number 4 in the UK, where its release was delayed until November 1972, and has periodically reemerged on the UK Singles Chart, most notably after Lennon's death in 1980, at which point it peaked at number 2.  Also a protest song against the Vietnam War, "Happy Xmas (War Is Over)" has since become a Christmas standard, frequently covered by other artists, appearing on compilation albums of seasonal music, and named in polls as a holiday favourite. Milk and Honey is an album by John Lennon and Yoko Ono released in 1984.  Following the compilation "The John Lennon Collection", it is Lennon's eighth and final studio album, and the first posthumous release of new Lennon music, having been recorded in the last months of his life during and following the sessions for their 1980 album "Double Fantasy".  It was assembled by Yoko Ono in association with the Geffen label. John and Yoko: A Love Story is a 1985 television drama that chronicles the lives of John Lennon and Yoko Ono, beginning just before they met in 1966 and concluding with Lennon's murder in 1980.  The movie was made with the co-operation of Yoko Ono, who controlled the song rights. John Lennon/Plastic Ono Band is the debut studio album by English rock musician John Lennon.  It was released in 1970, after Lennon had issued three experimental albums with Yoko Ono and "Live Peace in Toronto 1969", a live performance in Toronto credited to the Plastic Ono Band.  The album was recorded simultaneously with Ono's debut avant garde solo album, "Yoko Ono/Plastic Ono Band", at Ascot Sound Studios and Abbey Road Studios using the same musicians and production team and nearly identical cover artwork.
Answer: Elephant's Memory