Question: What country did rock bands Screaming Trees and Porno for Pyros originate in? 

Context paragraphs:
Beat Happening/Screaming Trees: Beat Happening/Screaming Trees is an EP and a one-off collaboration between Beat Happening (from Olympia, Washington) and Screaming Trees (from Ellensburg, Washington).  Originally released on Homestead Records in 1988, it was later reissued as part of Beat Happening's box set "Crashing Through" in 2002.  The journal of Kurt Cobain contains a draft of a letter sent to Mark Lanegan, in which he described "Polly Pereguin" as his favorite pop song of the 1980s.

Pets (song): "Pets" is a song by alternative rock band Porno for Pyros and the second single from their 1993 self-titled album, "Porno for Pyros".  The Cursed Female / Cursed Male" single preceded "Pets," but saw only a limited radio station and promotional release, making "Pets" the first widely available commercial single from the album.

Napalm Beach: Napalm Beach is an American punk rock band from Portland, Oregon.  One of the longest-running punk bands in the U.S., they are credited by some as being early innovators of the grunge sound.  Nicholas Pell, writing for the "Portland Mercury" said "a huge influence on the grunge and alternative rock of the 1990s, Napalm Beach never had the name recognition of other Portland bands like Poison Idea or the Wipers."  Napalm Beach shared the stage with bands such as X, Public Image Ltd., Joan Jett, Johnny Thunders, Gun Club, Bad Brains, Soundgarden, Screaming Trees, Mudhoney, Dead Moon, and Poison Idea.  They also toured Germany five times between 1989 and 1992.  During their long musical career they have released more than 30 studio and live recordings in various formats on a number of small independent labels in the U.S. and Germany.

Screaming Trees discography: The discography of Screaming Trees, an Ellensburg, Washington-based rock band, consists of seven studio albums, three compilation albums, five extended plays (EP), and six singles, though this does not include any solo material recorded by the individual members of Screaming Trees.

Screaming Trees: Screaming Trees was an American rock band formed in Ellensburg, Washington in 1985 by vocalist Mark Lanegan, guitarist Gary Lee Conner, bass player Van Conner and drummer Mark Pickerel.  Pickerel had been replaced by Barrett Martin by the time the band reached its most successful period.  Although widely associated with grunge, the band's sound incorporated hard rock and psychedelic elements.  During Screaming Trees' existence the band released seven studio albums, five EPs, and three compilations.

Van Conner: Van Conner (born March 17, 1967 in Apple Valley, California) is an American rock musician.  In 1984 he co-founded the band Screaming Trees with his brother Gary Lee Conner and close friends Mark Lanegan and Mark Pickerel.  On the 25 June 2000 Screaming Trees announced their official breakup.  Conner would start a low key band under the name Gardener which released its only album in the 1990s under the name "New Dawning Time".  Conner has also had brief appearances as a session musician with other known bands such as Queens of the Stone Age and helping Mark Lanegan on his solo album I'll Take Care of You.

Change Has Come: Change Has Come was the only recording the Screaming Trees released through Sub Pop.  Released in 1990 the Screaming Trees then moved on to a major label, Epic Records, for their next three albums - "Uncle Anesthesia", "Sweet Oblivion," and "Dust", as well as the "Something About Today" EP.

Gary Lee Conner: Gary Lee Conner (born Lee Gary Conner on August 22, 1962 in Fort Irwin, California, USA) was the lead guitarist for rock act Screaming Trees, along with his brother Van Conner, who was the band's bassist.  Conner began his career with Screaming Trees in 1985 which lasted until their disbanding in 2000.  During that time he released two non-Tree albums: The Purple Outside-Mystery Lane (1990 New Alliance Records) with brother Patrick Conner on Drums and the single Grasshopper's Daydream/Behind The Smile (1999 sub pop) this album also featured Josh Homme from Queens of the Stone Age.  Appearances on other artists material include, Beat Happening "Indian Summer" and "Midnight a Go-Go" from "Jamboree" as well as "Against the 70s" by Mike Watt from "Ball-Hog or Tugboat? " (1995 Columbia Records).  After ten years of seclusion he finally released a new album in 2010 from his band Microdot Gnome.  The album "4D Sugarcubes" was released on Moonbus International Recordings in April 2010 as was available on CD and MP3.  At the moment he is planning future releases from Microdot Gnome.  In August 2016, Conner released a long-awaited solo album, Ether Trippers, on Strange Earth Records.

Taste You (Auf der Maur song): "Taste You" is the third and final single from Auf der Maur's self-titled solo debut.  Like the album's previous single, it failed to chart in the U.S. Due to a successful UK tour, the song received a moderate amount of airplay and peaked at number 51.  The song features guest vocals from Mark Lanegan, formerly of the bands Screaming Trees and Queens of the Stone Age.

Porno for Pyros: Porno for Pyros were an American alternative rock band formed in Los Angeles, California in 1992, following the break-up of Jane's Addiction.  The band comprised former Jane's Addiction members Perry Farrell (vocals) and Stephen Perkins (drums), and Peter DiStefano (guitar) and Martyn LeNoble (bass).

Supporting paragraphs: Screaming Trees Porno for Pyros
Answer: American alternative rock band