Question: Who is the sibling of the artist who wrote Will to Love?

full_context: Document 1: The Loner (Neil Young song): "The Loner" is a song by Neil Young, his first solo single. It was released on his solo debut album in November 1968, and then an edited version as his debut solo single three months later on Reprise Records. It missed the "Billboard" Hot 100 chart completely, but over time has become a staple of his performance repertoire. Both it and "Sugar Mountain", its B-side recorded live at the Canterbury House in Ann Arbor, Michigan, were released on album together for his 1977 compilation, "Decade".
Document 2: 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 3: Pocahontas (song): "Pocahontas" is a song written by Neil Young that was first released on his 1979 album "Rust Never Sleeps". It has also been covered by Johnny Cash, Everclear, Emily Loizeau, Crash Vegas, Gillian Welch and Ian McNabb.
Document 4: 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 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: Love Is a Rose: ``Love Is a Rose ''is a song written and composed by Neil Young. It first became popular in 1975 when Linda Ronstadt had a country hit with her version.`` Love Is a Rose'' has also been covered by other artists over the years.
Document 7: Will You Still Love Me? (song): ``Will You Still Love Me? ''is a song written by David Foster, Tom Keane and Richard Baskin for the group Chicago and recorded for their album Chicago 18 (1986). The second single released from that album, it reached number three on the U.S. Billboard Hot 100 chart in early 1987, prevented from further chart movement by`` Keep Your Hands to Yourself'' by The Georgia Satellites and ``Livin 'on a Prayer ''by Bon Jovi, and also number two on the Adult Contemporary chart, kept from the top spot by`` Ballerina Girl'' by Lionel Richie.
Document 8: Love Is a Rose: "Love Is a Rose" is a song written and composed by Neil Young. It first became popular in 1975 when Linda Ronstadt had a country hit with her version. "Love Is a Rose" has also been covered by other artists over the years.
Document 9: 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 10: 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 11: Will to Love: "Will to Love" is a song written by Neil Young that was first released on his 1977 album "American Stars 'N Bars". A promotional single of "Will to Love" was released, backed with a live performance of "Cortez the Killer."
Document 12: Lotta Love: ``Lotta Love ''is a song written and recorded by Neil Young and released on his 1978 Comes a Time album.`` Lotta Love'' was also covered by Nicolette Larson in 1978. Larson's version reached No. 8 on the Billboard Hot 100 chart and No. 8 on the Cash Box Top 100 in February 1979. It also hit No. 1 on the Easy Listening chart and was a hit in Australia (No. 11) and New Zealand (No. 22).
Document 13: 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 14: 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 15: When You Dance I Can Really Love: "When You Dance I Can Really Love" is the ninth track on Neil Young's 1970 album "After the Gold Rush". It was written by Young.
ground_truth: Astrid Young
sub_queries: Who was the artiste for Will to Love? Answer: Neil Young
Neil Young >> sibling Answer: Astrid Young