Question: Who is the sister of Weld's performer?

full_context: Document 1: Decade (Neil Young album): Decade is a compilation album by Canadian musician Neil Young, originally released in 1977 as a triple album, now available on two compact discs. It contains 35 of Young's songs recorded between 1966 and 1976, among them five tracks that had been unreleased up to that point. It peaked at No. 43 on the "Billboard" Top Pop Albums chart, and was certified platinum by the RIAA in 1986.
Document 2: Weld (album): Weld is a live album and concert video by Neil Young & Crazy Horse released in 1991, comprising performances recorded on the tour to promote the "Ragged Glory" album. It was initially released as a limited edition three-disc set entitled "Arc-Weld", with the "Arc" portion being a single disc consisting in its entirety of a sound collage of guitar noise and feedback. "Arc" has since been released as a separate title.
Document 3: Scott Young (writer): Scott Alexander Young (April 14, 1918 – June 12, 2005) was a Canadian journalist, sportswriter, novelist and the father of musicians Neil Young and Astrid Young. Over his career, Young wrote 45 books, including novels and non-fiction for adult and youth audiences.
Document 4: Landing on Water: Landing on Water is the 15th studio album by Canadian musician Neil Young. The album was released on July 21, 1986, by Geffen Records. Several of the songs on the album were resurrected from Neil Young and Crazy Horse's failed 1984 sessions - a set of sessions where, according to longtime producer David Briggs, the musicians "played like monkeys".
Document 5: William Young (Nova Scotia politician): Born in Falkirk, the son of John Young and Agnes Renny, Young was first elected to the Nova Scotia House of Assembly in 1836 as a Reformer (or Liberal) and, as a lawyer, defended Reform journalists accused of libel. When responsible government was instituted in 1848, Young hoped to become the first Premier but was passed over in favour of fellow reformer James Boyle Uniacke and Young became Speaker. However, Young succeeded Uniacke in 1854.
Document 6: Jock Young: Jock Young was educated at the London School of Economics. His PhD was an ethnography of drug use in Notting Hill, West London, out of which he developed the concept of moral panic. The research was published as "The Drugtakers". He was a founding member of the National Deviancy Conferences and a group of critical criminologists in which milieu he wrote the groundbreaking, "The New Criminology: For a Social Theory of Deviance" in 1973, with Ian Taylor and Paul Walton and "The Manufacture of News" (with Stan Cohen).
Document 7: Time Fades Away: Time Fades Away is a 1973 live album by Canadian musician Neil Young. Consisting of previously unreleased material, it was recorded with The Stray Gators on the support tour following 1972's highly successful "Harvest". Due to Young's dissatisfaction with the tour, it was omitted from his catalogue and not released on CD until 2017.
Document 8: The Needle and the Damage Done: "The Needle and the Damage Done" is a song by Neil Young that describes the destruction caused by the heroin addiction of musicians he knew including his friend and Crazy Horse bandmate Danny Whitten. It previews the theme of the "Tonight's the Night" album that reflects Young's grief over the heroin overdose and death of both Whitten and Bruce Berry, a roadie for Young and Crazy Horse.
Document 9: Rust Never Sleeps: Rust Never Sleeps is a live album by Canadian singer-songwriter Neil Young and American band Crazy Horse. It was released on June 22, 1979, by Reprise Records. Most of the album was recorded live, then overdubbed in the studio. Young used the phrase "rust never sleeps" as a concept for his tour with Crazy Horse to avoid artistic complacency and try more progressive, theatrical approaches to performing live.
Document 10: Nick Sagan: Nick Sagan (born September 16, 1970 in Boston, Massachusetts) is an American novelist and screenwriter. He is the author of the science fiction novels "Idlewild", "Edenborn", and "Everfree", and his screen credits include episodes of "" and "". He is the son of astronomer Carl Sagan and artist and writer Linda Salzman.
Document 11: John Walter Scott: John Walter Scott (November 2, 1845 – January 4, 1919) of New York City, was originally from England, but he emigrated to the United States to take part in the California Gold Rush. Unsuccessful at the prospecting trade, Scott began to sell postage stamps for collectors and in a short period of time became the nation's leading stamp dealer. During his lifetime, he was known as "The Father of American Philately" by his fellow stamp collectors.
Document 12: James Young (Upper Canada politician): He was born in Nova Scotia in 1777 and settled in Ameliasburgh Township in Upper Canada. In 1808, he was named justice of the peace in the Midland District. He served in the local militia during the War of 1812 and became lieutenant colonel in 1824. He represented Hastings & Ameliasburg in the 6th Parliament of Upper Canada. He died at Carrying Place in 1831.
Document 13: Life (Neil Young & Crazy Horse album): Life is an album by Canadian musician Neil Young and his backing band Crazy Horse, and it is Young's last release on the Geffen label. As with their 1979 album "Rust Never Sleeps", Young and the Horse performed most of this album's songs live with the exceptions of "Cryin' Eyes" and "We Never Danced" which were recorded in studio. The album was released on July 6, 1987.
Document 14: Jacob Richler: Jacob Richler is a Canadian newspaper and magazine journalist, and the son of novelist Mordecai Richler and Florence Isabel (Wood). He was the inspiration for his father's "Jacob Two-Two" trilogy of children's books.
Document 15: Now and Live: Now & Live is a double CD compilation-like album released in 1997 by Paul Rodgers of Free and Bad Company fame. In fact, it is a re-release of the studio album "Now" including a disc of live material recorded in 1995 and issued on the album "".
ground_truth: Astrid Young
sub_queries: Weld >> performer Answer: Neil Young
Neil Young >> sibling Answer: Astrid Young