Question: Who was the drummer of the band formed by a founding member of Nirvana after Kurt Cobain's death?

Context paragraphs:
Teen Spirit: The Tribute to Kurt Cobain: Teen Spirit: The Tribute to Kurt Cobain is a documentary about Nirvana band leader Kurt Cobain.  Released in September 1996 it is significant as the first unofficial Kurt Cobain or Nirvana documentary to be available as a home video.

Smells Like Nirvana: "Smells Like Nirvana" is a parody of Nirvana's song "Smells Like Teen Spirit", written and performed by "Weird Al" Yankovic; it was released both as a single and as part of Yankovic's "Off the Deep End" album in April 1992.  "Smells Like Nirvana" was written during a three-year career low for Yankovic after the financial failure of his film "UHF", but captured the quickly-rising popularity of the grunge style and Nirvana's success.  The song was written to poke fun at the fact that many people had a hard time understanding Nirvana singer Kurt Cobain's lyrics in the original song.  After being unable to contact Nirvana by conventional means, Yankovic called Cobain while the band was on the set of "Saturday Night Live", where Cobain quickly gave permission to record the parody.

List of songs recorded by Nirvana: Nirvana was an American rock band formed by singer/guitarist Kurt Cobain and bassist Krist Novoselic in Aberdeen, Washington in 1987, with drummer Dave Grohl joining the band in 1990.  Though their brief run ended following the death of Kurt Cobain in 1994, Nirvana has come to be regarded as one of the most influential and important rock bands of the modern era.

Kurt Cobain: Montage of Heck: Kurt Cobain: Montage of Heck (also billed as Cobain: Montage of Heck) is a 2015 documentary film about Nirvana lead singer Kurt Cobain.  The film was directed by Brett Morgen and premiered at the 2015 Sundance Film Festival.  It received a limited theatrical release worldwide and premiered on television in the United States on HBO on April 24, 2015.  The documentary chronicles the life of Kurt Cobain from his birth in Aberdeen, Washington in 1967, through his troubled early family life and teenage years and rise to fame as front man of Nirvana, up to his death in April 1994 in Seattle at the age of 27.

Love and Death: The Murder of Kurt Cobain: Love and Death: The Murder of Kurt Cobain, published by Simon & Schuster, is a collaborative investigative journalism book written by Ian Halperin and Max Wallace purporting to show that rock star Kurt Cobain, believed to have committed suicide, was in fact murdered, possibly at the behest of his wife Courtney Love.  It is a follow-up to the authors' 1998 bestseller on the same subject, "Who Killed Kurt Cobain?" .  The book is based on 30 hours of revealing audiotaped conversations, exclusively obtained by the authors, between Courtney Love's private investigator, Tom Grant, and her and Cobain's entertainment attorney, Rosemary Carroll, who both dispute the official finding of suicide and believe Cobain was in fact murdered.

Suicide of Kurt Cobain: On April 8, 1994, Kurt Cobain, the lead singer of the grunge band Nirvana, was found dead at his home, located at 171 Lake Washington Boulevard East in Seattle, Washington.  Forensic analysis at the time determined he had killed himself on April 5.  The Seattle Police Department incident report states: "Kurt Cobain was found with a shotgun across his body, had a visible head wound and there was a suicide note discovered nearby."  The King County Medical Examiner noted puncture wounds on the inside of both the right and left elbow.  Prior to his death, Cobain had checked out of a drug rehabilitation facility and had been reported as suicidal by his wife Courtney Love.

Kurt Cobain Memorial Park: Kurt Cobain Memorial Park, also called Kurt Cobain Landing, is the first official, full-scale memorial to Kurt Cobain in his hometown of Aberdeen, Washington.  A welcome sign to the city, placed in 2005, more than ten years after Cobain's death, obliquely says "come as you are" but does not mention him by name and was the first official recognition of Cobain.  The park, initially built in Felony Flats on city-owned land near his Aberdeen home in 2011, and maintained by local volunteers as Kurt Cobain Landing, was adopted by the city of Aberdeen in 2015, 20 years after his death.  As recently as 2011, a motion not to rename the adjacent Young Street Bridge after Cobain was applauded at a city council meeting.

Nirvana (band): Nirvana was an American rock band formed by singer and guitarist Kurt Cobain and bassist Krist Novoselic in Aberdeen, Washington, in 1987.  Nirvana went through a succession of drummers, the longest-lasting being Dave Grohl, who joined in 1990.  Despite releasing only three full-length studio albums in their seven-year career, Nirvana has come to be regarded as one of the most influential and important alternative bands in history.  Though the band dissolved in 1994 after the death of Cobain, their music maintains a popular following and continues to influence modern rock and roll culture.

Gina Mainwal: Gina Mainwal is an American rock musician and filmmaker.  She is best known as the drummer for Sweet 75, a band formed by Nirvana bassist Krist Novoselic after Nirvana disbanded.  Mainwal has also drummed for the No WTO Combo, a punk rock band also including Novoselic, Jello Biafra, and Kim Thayil.

Krist Novoselic: Krist Anthony Novoselic ( ; Croatian: Krist Novoselić ; often referred to as Chris Novoselic, born May 16, 1965) is an American rock musician, and was the bass guitarist and founding member of the grunge band Nirvana.  After Nirvana disbanded following the death of Kurt Cobain in 1994, Novoselic formed Sweet 75 in the same year and Eyes Adrift in 2002, releasing one album with each band.  From 2006 to 2009 he played in the punk band Flipper, and in 2011 contributed bass and accordion to the song "I Should Have Known", on Foo Fighters' studio album "Wasting Light", along with playing bass guitar and accordion in Giants in the Trees since June 2016.

Supporting paragraphs: Gina Mainwal Krist Novoselic
Answer: Gina Mainwal