Question: What was the title of Kraftwerk's 9th album in 1986, featuring the number one single "Der Telefon-Anruf"?

full_context: Document 1: Call the Police (LCD Soundsystem song): "Call the Police" (stylized as "call the police" on digital releases) is a song by American rock band LCD Soundsystem. It was released together with "American Dream" as a digital double A-side single on May 5, 2017, through DFA Records and Columbia Records, as the lead single from their fourth studio album, "American Dream" (2017). The song peaked at number 78 in Scotland and number 26 on the "Billboard" Hot Rock Songs chart.
Document 2: Computer World: Computer World (German: Computerwelt) is the eighth studio album by German electronic music band Kraftwerk, released on May 10, 1981. The album peaked at number fifteen on the UK Albums Chart. It was certified silver by the British Phonographic Industry (BPI) on 12 February 1982 for shipments in excess of 60,000 copies.
Document 3: Electric Café: Electric Café is the ninth studio album by the electronic group Kraftwerk, originally released in 1986. In October 2009 it was re-released under its original working title, Techno Pop. The initial 1986 "Electric Café" came in versions sung in English and German, as well as a limited ""Edición Española"" release, featuring versions of "Techno Pop" and "Sex Object" with only Spanish lyrics. It was the first Kraftwerk LP to be created using predominantly digital musical instruments, although the finished product was still recorded onto analog master tapes.
Document 4: Call Me (Blondie song): "Call Me" is a song by the American new wave band Blondie and the theme to the 1980 film "American Gigolo". Released in the US in early 1980 as a single, "Call Me" was number one for six consecutive weeks on the "Billboard" Hot 100 chart, where it became the band's biggest single and second #1. It also hit #1 in the UK and Canada, where it became their fourth and second chart-topper respectively. In the year-end charts of 1980 it was Billboard's #1 hit, and according to Billboard magazine, was the top-selling single of the year in the United States in 1980 and RPM's #3.
Document 5: Analog Worms Attack: Analog Worms Attack is French electronic musician Mr. Oizo's first full-length album, released in 1999. It was available on 10", 12", and CD. The album is mostly instrumental and minimal, taking cues from French house and early American hip hop. All music was composed on mainly analogue synthesisers and equipment, most notably the Korg MS-20 analog synth, as opposed to later works that would rely upon digital equipment and techniques. French producer and Ed Banger staple Feadz provides most of the turntable work on the record.
Document 6: Berlin Calling: Berlin Calling is a 2008 German tragicomedy directed by Hannes Stöhr. The movie depicts the events following DJ and producer Ickarus's (Paul Kalkbrenner) institutionalization for drug abuse.
Document 7: Trans-Europe Express (album): Trans-Europe Express (German: Trans Europa Express ) is the sixth studio album by German electronic music band Kraftwerk. Recorded in mid-1976 in Düsseldorf, Germany, the album was released in March 1977 on Kling Klang Records. The album's themes were influenced by friends who suggested writing songs about the Trans Europ Express to reflect Kraftwerk's electronic music style. Critics have described the album as having two specific themes: a celebration of Europe and the disparities between reality and image. Musically, the songs on this album differ from the group's earlier Krautrock style with a focus on electronic mechanized rhythms, minimalism, and occasionally manipulated vocals.
Document 8: The Best of The Call: The Best of The Call is a compilation album released by American rock band The Call. The album was released in the United States on July 8, 1997 by WEA (Now Warner Music Group), the music arm of Warner Bros.. The album includes songs spanning the group’s career, as well as two new tracks and solo tracks from Been.
Document 9: Esperanto (Elektric Music album): Esperanto, released in 1993, was the first album by Elektric Music, initially a collaboration of Karl Bartos (formerly of Kraftwerk) and Lothar Manteuffel (formerly of Rheingold), but later only Bartos worked under this name. The project begun after Bartos ended his involvement with Kraftwerk in 1991. The songs "Show Business" and "Kissing the Machine" were co-written with Andy McCluskey of OMD, with McCluskey performing vocals on the latter track. "Crosstalk" and "Overdrive" were co-written with Kraftwerk associate Emil Schult, who was also the art director of the cover graphics of the early Elektric Music releases.
Document 10: The Telephone Call: "The Telephone Call" (German: "Der Telefon-Anruf") is a song by the German electronic music band Kraftwerk. It was released in 1987 as the second and final single from their ninth studio album, "Electric Café" (1986). The single was their second number-one on "Billboard" Hot Dance Club Play and stayed two weeks at the number-one spot. It is the only Kraftwerk song to feature Karl Bartos on vocals.
Document 11: Computer Love (Kraftwerk song): "Computer Love" (German version title: "Computerliebe") is a song by the German electronic band Kraftwerk. It was released in 1981 on the studio album "Computer World" and as a single in the same year. The song, on a double A-sided single with "The Model", went to number one in the UK Singles Chart. The song was re-arranged and re-recorded for the band's 1991 studio album "The Mix".
Document 12: Telephone (song): "Telephone" is a song recorded by American singer Lady Gaga for her third EP, "The Fame Monster" (2009). The song features American singer Beyoncé. The song was written by Gaga, Rodney Jerkins, LaShawn Daniels, Lazonate Franklin and Beyoncé. Inspired by her fear of suffocation, Gaga explained that the lyrics preferring relaxing on the dance floor to answering her lover's phone call are a metaphor, the phone calling her representing the fear of not having worked hard enough to succeed. Originally, Gaga wrote the song for Britney Spears, who recorded a demo. Musically, "Telephone" consists of an expanded bridge, verse-rap and a sampled voice of an operator announcing that the phone line is unreachable. Beyoncé appears in the middle of the song, singing the verses in a rapid-fire way, accompanied by double beats.
Document 13: Alarm Call: "Alarm Call" is a song recorded by Icelandic singer Björk for her third studio album "Homogenic" (1997). It was released as the fourth single from the album, peaking at number 33 in the UK.
Document 14: Modern Talking: Modern Talking was a German duo consisting of Thomas Anders and Dieter Bohlen. They have been referred to as Germany's most successful pop duo, and have had a number of hit singles, reaching the top five in many countries. Some of their most popular and widely known singles are "You're My Heart, You're My Soul", "You Can Win If You Want", "Cheri, Cheri Lady", "Brother Louie", "Atlantis Is Calling (S.O.S. for Love)" and "Geronimo's Cadillac".
Document 15: Darkdancer: Darkdancer is the second studio album released by Les Rythmes Digitales. It was first released in May 1999 but received little critical acclaim, albeit more than the band's first release, "Libération". After British electronic musician Stuart Price, the sole member of Les Rythmes Digitales, began to gain attention for his collaboration with artists such as Madonna, "Darkdancer" was re-released on 5 September 2005 in the UK as a dual CD/DVD set that included some unreleased songs, song remixes, and the videos for "(Hey You) What's That Sound?" and "Sometimes". In a 2005 review of the album's rerelease, the BBC called it "ahead of its time", and credits the album for launching much of the electro-pop vogue of the 2000s.
ground_truth: Electric Café