Question: Are Die Kreuzen and The LaFontaines both rock bands?

Documents:
source: The LaFontaines
text: The LaFontaines The LaFontaines are a Scottish band from Motherwell, North Lanarkshire, formed in 2010. The band consists of Kerr Okan (lead vocals), Jamie Keenan (drums, vocals), John Gerard (bass, vocals), Iain Findlay (guitar), and Darren McCaughey (guitar, keyboard). Their style is a unique blend of hip hop, rock and pop. The band are named after American voice actor Don LaFontaine.

source: Die Kreuzen
text: Die Kreuzen Die Kreuzen (pronounced Dee-Kroytzen) is a rock band from Milwaukee, Wisconsin formed in 1981. The name, which was taken from a German Bible, is grammatically incorrect German for "the crosses". They began as a hardcore punk group and moved on to alternative rock.

source: Century Days
text: Century Days Century Days is the third album by Die Kreuzen, released in July 1988 through Touch and Go Records.

source: Killdozer (band)
text: Killdozer (band) Killdozer was an American noise rock band, formed in Madison, Wisconsin in 1983, with members Bill Hobson, Dan Hobson and Michael Gerald. They took their name from the 1974 TV movie, directed by Jerry London, itself based on a Theodore Sturgeon short story. They released their first album, "Intellectuals are the Shoeshine Boys of the Ruling Elite", in the same year. The band split in 1990 but reformed in 1993, losing guitarist Bill Hobson and gaining Paul Zagoras, and continued until they split up in 1996. Their farewell tour was officially titled "Fuck You, We Quit!" , and included Erik Tunison of Die Kreuzen in place of Dan Hobson on drums and Jeff Ditzenberger on additional guitar. The band released nine albums, including a post-breakup live CD, "The Last Waltz".

source: October File
text: October File October File are a British post-punk band, named after the die Kreuzen album. Their debut album was released in 2004; subsequent releases followed on the labels Golf Records and Candlelight Records. Their music uses elements of punk, hardcore and industrial metal, often with political overtones. Jaz Coleman of Killing Joke guests on 2007's "Holy Armour from the Jaws of God". The group was scheduled to tour with Prong in January 2008 but pulled out due to illness. The band toured in February 2010 with American band Fear Factory and British band Sylosis, followed closely by an appearance at Hammerfest II in Prestatyn, Wales on the second stage. Additionally, the band appeared as themselves in the zombie comedy Zombie Driftwood, set in the Caymen Isles. The movie soundtrack comprises a selection of heavy metal songs and includes the tracks Falter and Isolation by October File.

source: Gone Away (EP)
text: Gone Away (EP) Gone Away is an EP by Die Kreuzen, released in 1989 through Touch and Go Records.

source: October File (album)
text: October File (album) October File is the second album by Die Kreuzen, released in May 1986 through Touch and Go Records.

source: Cows and Beer
text: Cows and Beer Cows and Beer is an EP by Die Kreuzen, released in 1982 through Version Sound.

source: Cement (Die Kreuzen album)
text: Cement (Die Kreuzen album) Cement is the fourth album by Die Kreuzen, released on October 22, 1991 through Touch and Go Records.

source: Die Kreuzen (album)
text: Die Kreuzen (album) Die Kreuzen is the eponymously titled debut album of Die Kreuzen, released in 1984 through Touch and Go Records. This is Die Kreuzen's last Hardcore Punk album before they moved on to other styles of music such as Alternative Rock.

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Answer: yes