Question: Which of the groups Circa Survive and Oasis was founded first ?

Context paragraphs:
Avalon (Anthony Green album): Avalon is the debut solo album by current Saosin and current Circa Survive, vocalist Anthony Green.  It was released August 5, 2008 on Photo Finish Records, with a US tour to coincide with its release.  Keith Goodwin, Tim Arnold, and Dan Schwartz (also known as the band Good Old War) have guest appearances on this record.  The album leaked in its entirety on August 1, 2008.  Anthony Green's Avalon is being made available on vinyl LP.  The package includes the limited Vinyl LP and Digital Remix CD of Avalon, remixes created by Colin Frangicetto of Circa Survive.

On Letting Go: On Letting Go is the sophomore studio album by American rock band Circa Survive released on May 29, 2007 through Equal Vision Records.  The album was produced by Bryan McTernan and was recorded throughout 2007 at the Salad Days Recording Studios in Baltimore, Maryland.  It follows-up the group's debut full-length studio album, "Juturna" (2005).  The album charted at No. 24 on the U.S. "Billboard" 200, selling about 24,000 copies in its first week.  As of July 11, 2007, it had sold 51,357 copies in the US.

Descensus (album): Descensus is the fifth studio album by the American rock band Circa Survive, released on November 24, 2014.  Descensus is Circa Survive's first album released through Sumerian Records, aside from the Deluxe CD/DVD version of the band's previous album, "Violent Waves" which was released on August 28, 2012.  As with Circa Survive's previous albums, Esao Andrews created the album artwork.

Blue Sky Noise: Blue Sky Noise is the third studio album by American rock band Circa Survive, released on April 20, 2010 through Atlantic Records.  It serves as the band's first release after departing from Equal Vision Records, and is a follow-up to their second studio album, "On Letting Go" (2007).

Oasis (band): Oasis were an English rock band formed in Manchester in 1991.  Developed from an earlier group, the Rain, the band originally consisted of Liam Gallagher (vocals and tambourine), Paul "Bonehead" Arthurs (guitar), Paul "Guigsy" McGuigan (bass guitar), and Tony McCarroll (drums, percussion).  They were later joined by Liam's older brother Noel Gallagher (lead guitar and vocals) as a fifth member, becoming the band's settled line-up until April 1995.

The Inuit Sessions: The Inuit Sessions is Circa Survive's first release.  It was released in 2005 through Equal Vision Records.  Only 3,000 copies of it were made on compact disc.  The EP contains "Act Appalled" and "The Great Golden Baby", which were both released on the Juturna album.

Violent Waves: Violent Waves is the fourth studio album by the American rock band Circa Survive.  It was released on August 28, 2012.  As Circa Survive wanted a record that would capture the band's live sound, where they felt the magic of the band lay, they recorded the album in one week and produced it themselves.  Violent Waves is also Circa Survive's first and only album released without a record label.

The Amulet (album): The Amulet is the sixth studio album by American rock band Circa Survive, released on September 22, 2017.  The Amulet is Circa Survive's first album released through Hopeless Records, after departing their previous label, Sumerian Records.  As with previous Circa Survive albums, Esao Andrews created the album artwork.

Appendage (EP): Appendage is Circa Survive's second EP.  It was released on November 30, 2010 through Atlantic Records.  It contains b-sides from the Blue Sky Noise sessions, as well as a demo of "Sleep Underground".  As with Circa Survive's previous three albums and EP, Esao Andrews created the artwork.

Circa Survive: Circa Survive is an American rock band from the Philadelphia suburb of Doylestown, formed in 2004.  The band, led by Anthony Green, consists of former members from Saosin, This Day Forward, and Taken.

Supporting paragraphs: Circa Survive Oasis (band)
Answer: Oasis