Question: I'm Not Your Hero is a song written by a band that were formed in what year?

Context paragraphs:
I'm Not Your Hero: "I'm Not Your Hero" is a song written, recorded and performed by Canadian duo Tegan and Sara and produced by Greg Kurstin for the album "Heartthrob" (2013).  Recorded at Echo Studio and EastWest Studios in California in 2012, it was released on October 21 of that year as a promotional single.  The lyrics for the new wave synthpop ballad were written by Sara Quin, and discuss her teenage life in the 1990s when she was unable to identify with the lives of pop culture figures and had unforeseen thoughts about her later life.  Guitar chords, drums, bass guitar, synths and harmonized vocals are also played in the track.

Fight Fiercely, Harvard: "Fight Fiercely, Harvard" is a satirical college fight song written and originally performed by Tom Lehrer and dedicated to his alma mater, Harvard University.  The song was written in 1945 while Lehrer was in his second year of study at Harvard College and "eventually made him a local hero".

Come On Over (Royal Blood song): "Come On Over" is a song written by Mike Kerr and Ben Thatcher of British rock duo Royal Blood.  The song was originally recorded by the duo for the band's debut single, "Out of the Black", where it appeared as the B-side.  The track later appeared as the third track on the band's debut extended play "Out of the Black", and as the second track on the band's eponymous debut studio album, "Royal Blood".  The track also appeared on the band's third single, released by Black Mammoth Records and Warner Bros.  Records on 21 April 2014.  "Come On Over" also appears on the soundtrack for "WWE 2K15" and "Guitar Hero Live".

Hero (Family of the Year song): "Hero" is a song by American indie rock band Family of the Year featured on their second studio album "Loma Vista".  It was released as the album's second single in 2012 through Nettwerk.  The song was written by Joe Keefe, and it was produced by American production team Wax Ltd and Family of the Year.  It first appeared on the band's 2010 EP "Through The Trees" in a shorter version.  "Hero" was prominently used in Richard Linklater's 2014 film "Boyhood".  The song has also been used in the first season of "Girls", the 2012 film "Thanks for Sharing", the 2013 German film "Frau Ella" and has been frequently featured in certain episodes of "", "It's Okay, That's Love", and VH1's "Couples Therapy".  The band has performed the song in various talk shows such as "Jimmy Kimmel Live! ", "Conan" and "The Tonight Show with Jay Leno".  It was covered by Owen Danoff on Team Adam in the Live Playoffs of season 10 of "The Voice" (US).

Tegan and Sara: Tegan and Sara are a Canadian indie pop band formed in 1998 in Calgary, Alberta, composed of identical twin sisters Tegan Rain Quin and Sara Keirsten Quin (born September 19, 1980).  Both musicians are songwriters and multi-instrumentalists.

Little Monster (song): "Little Monster" is a song written by Mike Kerr and Ben Thatcher of British rock duo Royal Blood.  The song was originally recorded by the duo for release as a single, appearing on the band's second single of the same name, released by Black Mammoth Records and Warner Bros.  Records on 10 February 2014.  The single marked the band's first release under Warner Bros.  Records after signing with the label in 2013.  The track later appeared as the second track on the band's debut extended play "Out of the Black", and as the sixth track on the band's eponymous debut studio album, "Royal Blood".  It is currently the duo's highest-charting single.  The song is included as a playable track in "Guitar Hero Live".

You're a Friend of Mine: "You're a Friend of Mine" is a 1985 hit song, written by Narada Michael Walden and Jeffrey Cohen, with lead vocals by Clarence Clemons and Jackson Browne in a duet.  At the time of the song's release, Clemons was already well known nationally as the saxophonist in Bruce Springsteen's E Street Band.  The song was released on Clemons' solo album "Hero" of that year.  Browne's then-girlfriend Daryl Hannah provides background vocals and appears in the song's music video painting and later filming the duo.  Also appearing in the video is a backing band, including songwriter Walden on drums.  The 'B-Side' was a song called "Let the Music Say It" not included on the album "Hero".  "Let the Music Say It" was produced in 1985 and written by Clemons and Michael Jonzun.

Stricken (song): "Stricken" is a song by the American heavy metal band Disturbed.  The song was released on July 25, 2005 as the second single from their third studio album "Ten Thousand Fists".  "Stricken" was certified gold in the United States by the Recording Industry Association of America on August 18, 2008 for selling 500,000 copies.  It is one of the first of Disturbed's songs to include a guitar solo.  The song is featured in "" and "Guitar Hero Live" in addition to the Disturbed track pack in "Guitar Hero 5".  The song is also a part of the "Rock Band" downloadable content catalog.  The song was also featured in the "Project Gotham Racing 4".  The musical video for the song was filmed in an abandoned hospital in which some scenes from the 1984 horror film "A Nightmare on Elm Street" were filmed.  "Stricken" was used as official theme for WWE's PPV New Year's Revolution, in 2006.

The Acro-Brats: The Acro-Brats are a punk rock band from Boston, Massachusetts, formed in 2002.  They released their first album, "Kicking & Screaming" in 2003 and their second, "...Go Down Swinging! " in 2006.  Their song "Callout" was featured as a bonus song in "Guitar Hero".  Also, their song "Laughtrack" was a bonus track in "Guitar Hero II".  In 2007, their song "Day Late, Dollar Short" is a track featured as a bonus song in "Rock Band".  The 5-song EP, "Hey Medusa" was released in September, 2009 and was followed in July, 2010 by another 5-song EP, "Hair Trigger".  In spring of 2011, they were selected to compete in the WBCN Rock & Roll Rumble.  In August 2011, their song "Hair Trigger" was made available as downloadable content for "Rock Band"."

Leave It Alone (Broken Bells song): "Leave It Alone" is a song written by James Mercer and Brian Burton of the American alternative rock band Broken Bells.  It was originally recorded by the band for their second studio album, "After the Disco", where it appears as the fourth track on the album.  A "Leave It Alone" promotional single was released for streaming on the Australian branch of commercial music streaming service Spotify on February 4, 2014, becoming the fourth release by the band in promotion of "After the Disco", after singles "Holding On for Life", "After the Disco" and promotional single "Perfect World".  This Song can be Found in The soundtrack of the Movie Miss You Already starring Toni Collettte and Drew Berrymore.  This song is now available in the gameplay Guitar Hero Live.

Supporting paragraphs: I'm Not Your Hero Tegan and Sara
Answer: 1998