Question: Tom Blankenship is an American rock musician, he currently plays bass guitar for My Morning Jacket is an American rock band, formed in Louisville, Kentucky in what year?

Context paragraphs:
My Morning Jacket: My Morning Jacket is an American rock band formed in Louisville, Kentucky in 1998.  The band currently consists of vocalist/guitarist Jim James, bassist Tom Blankenship, drummer Patrick Hallahan, guitarist Carl Broemel, and keyboardist Bo Koster.  The band's sound, rooted in rock and country, is often experimental and psychedelic.  The group amassed a following beginning in the 2000s in part due to their live performances.

Carl Broemel: Carl Broemel is an American rock musician.  He currently plays guitar, pedal steel guitar, saxophone and sings back-up vocals for the Louisville, Kentucky band My Morning Jacket.  He played guitar in the pop/rock band Old Pike and in the alternative pop/rock band Silvercrush.

Brian Helicopter: Brian Helicopter is the stage name of Gareth Holder (born 27 June 1958, Leamington Spa), an English musician, based in the United States.  He is best known for playing bass guitar for the UK punk rock band The Shapes.  He also played for many other bands, the most notable being the NWOBHM bands Rogue Male and HellsBelles.  For a short time in the early 1980s, he was also a member of British R&B band The Mosquitos, with guitarist Steve Walwyn of Dr. Feelgood and Eddie and the Hot Rods, and can be seen on the cover of The Mosquitos only single "Somethin' Outta Nothin'".  A prolific session player, he appears both credited and uncreditied on many releases throughout the 1980s and early 1990s under both his real and stage name.  He was one of the first bassists in the nascent UK punk scene to adopt the Rickenbacker bass guitar which he still uses to this day.  He was also one of the first bass guitarists in the world to use Trace Elliot amplification.  His bass playing style is characterized by a very fast precise pick attack, and fast runs.  Unusually for a bass guitarist, he sometimes utilizes an overhand tapping technique more common to six string players.  He continues to play professionally, reverting between his real name and his stage name as the fancy takes him.  He is also a professional skydiving coach and instructor, currently holding seven world records in the sport.  He can be seen in an episode of MythBusters aired on the Discovery Channel taking presenter Kari Byron skydiving whilst testing the falling airplane blue ice myth.  He is also a vegetarian.  He can be seen in the independent film Six Sex Scenes and a Murder, in the role of the bounty hunter.  He currently resides in California, where he plays bass for the San Francisco Bay Area band Ghosthookers.  Ghosthookers released a record in 2008 which features Brian Helicopter on bass under his real name.

My Morning Jacket Does Xmas Fiasco Style: My Morning Jacket Does Xmas Fiasco Style is a 2000 EP by the rock band My Morning Jacket, containing Christmas songs.  Its alternate title is We Wish You a Merry Christmas and a Happy New Year!

Sean Yseult: Sean Yseult (born June 6, 1966) is an American rock musician.  She currently plays bass in the band Star & Dagger.  She has played various instruments with different bands over the years, most notably her bass work with the band White Zombie.

Early Recordings (My Morning Jacket album series): Early Recordings is a compilation album series by Louisville, Kentucky rock band My Morning Jacket.  It was released in 2004 on Darla Records.  The two constituent albums, called chapters, are called "The Sandworm Cometh" and "Learning" respectively.  Danny Cash created the graphic design to both albums and played bass and keyboard on the second.  J. Glenn performed drums for the series and Johnny Quaid played guitar.  "Two-Tone" Tommy played bass for the first album, but Quaid took over for the second.

Tom Blankenship: Tom Blankenship is an American rock musician.  He currently plays bass guitar for the Louisville, Kentucky band My Morning Jacket.  In 2012, Blankenship wrote an article on My Morning Jacket, discussing the band and growing up in Louisville, for the July issue of "Louisville Magazine".

My Morning Jacket discography: The discography of American indie rock band My Morning Jacket, consists of seven studio albums, 11 extended plays, 14 singles, four music videos, three compilation albums, four live albums and one video album.  The band signed with independent Darla Records in 1998 before moving to ATO in 2003.  James explained that "At the time, My Morning Jacket was just me and an acoustic guitar in my bedroom, I'd been sending cassette tapes out [and] our first record label, I wrote them a love letter, pretending Darla was a girl that I wanted to woo'.

The Waterfall (album): The Waterfall is the seventh studio album by American rock band My Morning Jacket.  Produced by Tucker Martine and group frontman Jim James, the album was released on May 4, 2015 by ATO Records and Capitol Records.  My Morning Jacket rose to prominence in the 2000s with a string of acclaimed albums and praised live performances.  Its sixth album, "Circuital" (2011), was equally well received.  The band toured in support of it for two years before taking a break.  They regrouped in late 2013 to begin work on "The Waterfall", a process which took eighteen months.

Johnny Rioux: Johnny Rioux is a musician, primarily known for playing in and working with many punk rock bands.  He was initially based in Boston but is now based in Texas.  He currently plays bass guitar with the Street Dogs, celtic rock band Murder the Stout (along with former Street Dogs guitarist Marcus Hollar) and Street Dogs' americana side project FM359.  He has previously played with Roger Miret and the Disasters, The Bruisers and The Kickovers.  He has also worked with bands in non-musician roles including as a guitar technician for The Mighty Mighty Bosstones and tour manager for Dropkick Murphys.  He has recently started producing, and has so far produced for Flatfoot 56, the Street Dogs and Roger Miret and the Disasters.

Supporting paragraphs: Tom Blankenship My Morning Jacket
Answer: 1998