Question: What type of band were Supergrass and 7 Year Bitch?

Context paragraphs:
Valerie Agnew: Valerie Agnew is best known for her relationship with the band called the Gits and as the drummer of 7 Year Bitch.  She started out in Ohio and was dating Steve Moriarty, the drummer of the Gits.  She was a very close friend of Mia Zapata.  The Gits, when they moved to Seattle Valerie went along with them, since she was good friends with them.  When Valerie comes to Seattle she meets up with the musicians that would soon to be her future band mates Selene Vigil (vocals), Elizabeth Davis (bass) and Stefanie Sargent (lead guitar), forming the band 7 Year Bitch.  Eventually signing with C/Z Records when they made their debut album "Sick 'Em" in 1992.

Roisin Dunne: Roisin Dunne Ross (born 18 September 1965 in Ireland), an Irish musician.  Best known for being the replacement guitarist of 7 Year Bitch, after their guitarist Stefanie Sargent died.  In 1992, they toured for their debut, with Valerie Agnew, Selene Vigil-Wilk, and Elizabeth Davis, which was her signature act with the band.  This was when Mia Zapata of the Gits had been raped and murdered on 7 July 1992.  The band had made a tribute album to her and Sargent.

Lisa Faye Beatty: Lisa Faye Beatty (October 15, 1964 – November 25, 2011) was best known for her involvement in the band 7 Year Bitch.  She replaced the guitarist Roisin Dunne in 1997.  The band later broke up the same year.  She was killed in a traffic collision in November 2011.

7 Year Bitch: 7 Year Bitch was an American punk rock band from Seattle, Washington that was active for 7 years, between 1990 and 1997.  Their career yielded three albums, and was impacted by the deaths of their guitarist Stefanie Sargent and close friend Mia Zapata, of fellow Seattle punks The Gits.

The Little Deaths: The Little Deaths was an American rock band formed in San Francisco, California in 1997.  The band was associated with the 1990s Queercore movement and became part of the San Francisco Bay-Area's late-90's musical renaissance which spawned bands like Subtonix, The Phantom Limbs, Erase Errata, The Vanishing, and the 7 Year Bitch offshoot, Clone.  The Little Deaths toured and played shows with bands such as The Need, Le Tigre, The Haggard and Imperial Teen extensively until 2000.  They released one critically acclaimed album entitled "" on New York-based Queercore label Heartcore Records in 1999.  The Little Deaths went through several line-up changes before disbanding in 2002.

Sick 'Em: Sick 'Em is an album by Seattle punk rock band 7 Year Bitch.  It was released in October 1992 on the local C/Z Records label and collected all of the band's previous releases up to that point onto one record.  The album was originally slated for an earlier release date but was delayed following the death of guitarist Stefanie Sargent in June 1992.

Elizabeth Davis (bassist): Elizabeth Davis-Simpson was born December 18, 1965 in the United States, best known for being the songwriter as well as the bassist of the punk rock band 7 Year Bitch.  Other bands she collaborated with included Riot grrrl bands such as Bratmobile, Heavens to Betsy and Bikini Kill.  She later worked on projects such as These Streets with Valerie Agnew, and has participated in a band named Clone.

Selene Vigil-Wilk: Selene Here Vigil (born July 16, 1965) is an American singer and musician.  She co-founded grunge band 7 Year Bitch alongside Elizabeth Davis, Valerie Agnew and Stefanie Sargent in 1990; they released three studio albums before disbanding in 1997.  In 2000, Vigil formed a gothic band, Cistine.  In 2010, Vigil released her debut solo album, "That Was Then".

Supergrass: Supergrass were an English rock band, formed in 1993 in Oxford.  The band consisted of brothers Gaz (guitar and lead vocals) and Rob Coombes (keyboards and backing vocals), Mick Quinn (bass and backing vocals) and Danny Goffey (drums and backing vocals).

7 Year Bitch (song): "7 Year Bitch" is a song by the British rock band Slade, released in 1985 as the second single from the band's twelfth studio album "Rogues Gallery".  The song was written by lead vocalist Noddy Holder and bassist Jim Lea, and produced by John Punter.  It reached No. 60 in the UK, remaining in the charts for three weeks.

Supporting paragraphs: Supergrass 7 Year Bitch
Answer: rock band