Question: Are The Gaslight Anthem and Dinosaur Jr. both bands formed in the 20th century?

full_context: Document 1: Brand New (band): Brand New is an American rock band from Long Island, New York. Formed in 2000, the band consists of Jesse Lacey (vocals, guitar), Vincent Accardi (guitar, vocals), Garrett Tierney (bass guitar, vocals), and Brian Lane (drums, percussion); they are joined by Benjamin Homola (percussion) and Kevin Devine (guitar, vocals) for their live performances. From 2005 until 2013 the band also included Derrick Sherman (guitar, backing vocals, keyboards).
Document 2: Freak Scene: "Freak Scene" is a song by American alternative rock band Dinosaur Jr., the opening track on the group's third studio album "Bug" (1988). Written and produced by frontman J Mascis, the song was recorded at Fort Apache Studios by engineers Paul Q. Kolderie and Sean Slade. "Freak Scene" was released as a single on SST Records in the United States and was also Dinosaur Jr.'s first release on Blast First in the United Kingdom. The band also made a music video to promote the single.
Document 3: Without a Sound: Without a Sound is the sixth studio album by alternative rock band Dinosaur Jr., released on August 23, 1994. It is the first Dinosaur Jr. album not to feature Murph on drums, who is replaced by vocalist and guitarist J Mascis. It is also their most commercially successful album, peaking at number 44 on the Billboard Top 200. "Feel the Pain" and "I Don't Think So" were released as singles, with "Feel the Pain" reaching number 4 on the Billboard Modern Rock Tracks chart, becoming one of their biggest hits. Mascis later admitted that his father's death affected his writing and performance on this album, and he took three years to deliver the next Dinosaur Jr. LP, 1997's "Hand It Over".
Document 4: Sebadoh: Sebadoh ( ) is an American indie rock band, currently signed with Joyful Noise Recordings. Sebadoh were formed in 1988 in Northampton, Massachusetts, by Eric Gaffney and Dinosaur Jr bass player Lou Barlow. Along with such bands as Pavement and Guided by Voices, Sebadoh helped pioneer lo-fi music, a style of indie rock characterized by low-fidelity recording techniques, often on four-track machines. The band's early output, such as "The Freed Man" and "Weed Forestin'" (both released 1990), as well as "Sebadoh III" (1991), was typical of this style. After a 14-year recording hiatus, during which time members pursued other projects while occasionally touring as Sebadoh, the group returned in 2013 with the "Secret EP" and a full-length album titled "Defend Yourself", which were both self-recorded. Lead singer Lou Barlow says of the band's resurrected sound, "We kept to ourselves during the recording and didn’t have much, if any, outside intervention. That, to my mind, makes it a true Sebadoh record and aligns the style of "Defend Yourself" with our early releases."
Document 5: The Gaslight Anthem: The Gaslight Anthem is an American rock band from New Brunswick, New Jersey, formed in 2006. The band consists of Brian Fallon (lead vocals, rhythm guitar), Alex Rosamilia (lead guitar, backing vocals), Alex Levine (bass guitar, backing vocals), and Benny Horowitz (drums, percussion, backing vocals).
Document 6: List of Taking Back Sunday band members: Taking Back Sunday is an American rock band from Long Island, New York, formed in 1999 and featuring the current line-up of Adam Lazzara (lead vocals), John Nolan (lead guitar, keyboards, vocals), Eddie Reyes (rhythm guitar), Shaun Cooper (bass guitar), and Mark O'Connell (drums, percussion), accompanied on tour by Nathan Cogan (guitars, keyboards). The group was originally formed by Antonio Longo, John Nolan, Eddie Reyes, Jesse Lacey, and Steven DeJoseph. The band has gone through multiple line-up changes in their career spanning seven studio albums. There have been eleven official members of Taking Back Sunday, four touring members, and twenty-three session members.
Document 7: All Time Low: All Time Low is an American rock band from Towson, Maryland, a suburb of Baltimore, formed in 2003. The band currently consists of lead vocalist and rhythm guitarist Alex Gaskarth, lead guitarist and backing vocalist Jack Barakat, bassist and backing vocalist Zack Merrick and drummer Rian Dawson. The band's name is taken from lyrics in the song "Head on Collision" by New Found Glory. The band consistently tours year-long, has headlined numerous tours, and has appeared at music festivals including Warped Tour, Reading and Leeds and Soundwave.
Document 8: Lights Resolve: Lights Resolve is an American alternative rock band that formed in New York City in 2006. The band consists of Matthew Reich (vocals/guitar), Neal Saini (drums), Luke Daniels (bass/vocals) and Ryan Foster (guitar/vocals). "Rolling Stone" has named them a Breakout Band in stating that they encompass "the theatrics and power of Muse mixed with the New York flavor of bands like the Bravery." Lights Resolve has played shows and toured with multi-platinum recording artists such as The Used, Panic! at the Disco, AWOLNATION, Twin Atlantic, We the Kings, J. Cole, Shiny Toy Guns, Dashboard Confessional, Phantom Planet and Straylight Run. In addition, they recently performed at Wilkes University's Spring Concert with We The Kings and Yellowcard. The band has also performed at many festivals including The Bamboozle, SXSW, CMJ, DelunaFest and Warped Tour.
Document 9: The Lumineers: The Lumineers are an American folk rock/Americana band based in Denver, Colorado. The founding members are Wesley Schultz (lead vocals, guitar) and Jeremiah Fraites (drums, percussion). Schultz and Fraites began writing and performing together in Ramsey, New Jersey in 2005. Cellist and vocalist Neyla Pekarek joined the band in 2010. The Lumineers emerged as one of the most popular folk rock/Americana artists during the revival of those genres and their growing popularity in the 2010s. The band's stripped back raw sound draws heavily from artists that influenced Schultz and Fraites such as Bruce Springsteen, Bob Dylan and Tom Petty. They are known for their energetic live shows and several international hit singles including "Ho Hey”, “Stubborn Love”, “Ophelia” and “Cleopatra”. The band has become one of the top touring bands in the U.S. and also sells out shows around the world.
Document 10: Dinosaur Jr.: Dinosaur Jr. is an American rock band formed in Amherst, Massachusetts, in 1984, originally simply called Dinosaur until legal issues forced a change in name.
Document 11: Farm (album): Farm is the ninth studio album by American alternative rock band Dinosaur Jr. It is the band's first release on the record label Jagjaguwar.
Document 12: List of songs recorded by Brand New: The American rock band Brand New has recorded songs for five studio albums, as well as numerous extended plays and demos. This list comprises the band's song catalog, as well as live renditions, early demo tracks, recorded appearances on other albums, and unreleased tracks that have been discussed by the band. Brand New formed in Long Island, a suburb of New York City in 2000. The group consists of vocalist and guitarist Jesse Lacey, guitarist Vincent Accardi, drummer Brian Lane, and bassist Garrett Tierney. Previous member Derrick Sherman also contributed guitar to a number of the bands releases, whilst producer Mike Sapone has worked with the band throughout their career, and is considered by the band to be a fifth or sixth member.
Document 13: J Mascis: J Mascis ( ; born Joseph Donald Mascis Jr., December 10, 1965) is an American musician, best known as the singer, guitarist and main songwriter for the alternative rock band Dinosaur Jr. He has also released several albums as a solo artist and played drums and guitar on other projects. His most recent solo album, "Tied to a Star", was released in August 2014. He was ranked number 86 in a "Rolling Stone" list of the "100 Greatest Guitarists", and number 5 in a similar list for "Spin" magazine in 2012.
Document 14: Aerosmith: Aerosmith is an American rock band, sometimes referred to as "the Bad Boys from Boston" and "America's Greatest Rock and Roll Band". Their style, which is rooted in blues-based hard rock, has come to also incorporate elements of pop, heavy metal, and rhythm and blues, and has inspired many subsequent rock artists. They were formed in Boston, Massachusetts in 1970. Guitarist Joe Perry and bassist Tom Hamilton, originally in a band together called the Jam Band, met up with vocalist/pianist/harmonicist Steven Tyler, drummer Joey Kramer, and guitarist Ray Tabano, and formed Aerosmith. In 1971, Tabano was replaced by Brad Whitford, and the band began developing a following in Boston.
Document 15: Dinosaur (album): Dinosaur is the debut studio album by the alternative rock band Dinosaur Jr. It was released in 1985 on Homestead Records. The album exhibits a folkier side of the band than on future releases , but some of the tracks on the album showed off a much heavier, more hardcore punk-based side to the band in songs such as "Does it Float", "Mountain Man", and "Bulbs of Passion".
ground_truth: no