Question: What is the birth date of the woman Paul McCartney was engaged to after Linda McCartney's death?

full_context: Document 1: Martha Lane Fox: Martha Lane Fox, Baroness Lane-Fox of Soho, CBE (born 10 February 1973) is a British businesswoman, philanthropist and public servant.
Document 2: Queen + Paul Rodgers Tour: Queen + Paul Rodgers Tour was a world concert tour by Queen guitarist Brian May and drummer Roger Taylor, joined by singer Paul Rodgers under the moniker of Queen + Paul Rodgers. The tour was Queen's first since The Magic Tour in 1986, and the death of lead singer Freddie Mercury in November 1991. The band's drummer Roger Taylor commented; "We never thought we would tour again, Paul (Rodgers) came along by chance and we seemed to have a chemistry. Paul is just such a great singer. He's not trying to be Freddie." Bassist John Deacon also did not take part due to his retirement in 1997, however he gave the enterprise his blessing.
Document 3: Amanda Pullinger: Amanda Pullinger is the Chief Executive Officer of 100 Women in Finance, formerly 100 Women in Hedge Funds. Ms. Pullinger has led the organization in its growth from a few hundred members in New York to more than 15,000 members in 21 cities globally. 100 Women launched its new name and branding at the Closing Bell of the NYSE on December 14, 2016 In 2009, she succeeded in bringing in Britain’s Prince William, Duke of Cambridge as the Patron of 100 Women in Hedge Funds. Ms. Pullinger welcomed The Duke and Duchess of Cambridge to the 100WHF's London Gala in 2011. In late 2012, it was announced that the Duke and Duchess of Cambridge, and Prince Harry would all be Patrons of 100WHF's Philanthropic Initiatives beginning in January 2013. In October 2013, a day after the Royal Christening of Prince George, Ms. Pullinger welcomed HRH The Duchess of Cambridge to 100WHF's London Gala for the benefit of Action on Addiction. She then welcomed HRH The Duchess of Cambridge to 100WHF's 2015 Gala in London for the benefit of The Art Room.
Document 4: Run Devil Run (album): Run Devil Run is the eleventh solo studio album by Paul McCartney using his own name, released in 1999. It features mostly covers of both familiar and obscure 1950s rock and roll songs, along with three original McCartney compositions written in the same style, including the title track. As his first project following first wife Linda's death in 1998, McCartney felt the need to get back to his roots and perform some of the music he loved as a teenager. On 14 December 1999, McCartney returned to the Cavern Club stage to play a set publicising the new album.
Document 5: Heather Watson: Heather Miriam Watson (born 19 May 1992) is a British tennis player and a Wimbledon Mixed Doubles Champion. She is a former British No.1 and current British No. 2 behind Johanna Konta.
Document 6: Stella McCartney: Stella Nina McCartney, OBE (born 13 September 1971) is an English fashion designer. She is the daughter of former Beatles member Paul McCartney and American musician, photographer and animal rights activist Linda McCartney. Like her mother, McCartney is a firm supporter of animal rights and is particularly known for her use of vegetarian and animal-free alternatives in her work.
Document 7: Mel B: Melanie Janine Brown (born 29 May 1975), better known as Mel B or Melanie B, is an English singer, songwriter, presenter, television personality, dancer, actress, author, and model. Brown rose to fame as a member of the girl group the Spice Girls, in which she was known as Scary Spice. Brown is also known for supporting girl power and earlier global tours, which grossed an estimated $500–800 million between 1996 and 2000.
Document 8: Wings Over the World tour: The Wings Over the World tour was a series of concerts in 1975 and 1976 by the British–American rock band Wings performed in Britain, Australia, Europe, the United States and Canada. The North American leg constituted band leader Paul McCartney's first live performances there since the Beatles' final tour, in 1966, and the only time that Wings played in the US and Canada. The world tour was well-attended and critically acclaimed, and resulted in a triple live album, "Wings Over America", which Capitol Records released in December 1976. In addition, the tour was documented in the television film "Wings Over the World" (1979) and a cinema release, "Rockshow" (1980).
Document 9: Concert for Linda: The Concert for Linda was a benefit tribute to Linda McCartney, wife of Paul McCartney. It was held at the Royal Albert Hall in London on 10 April 1999. Linda McCartney died after a long battle with cancer nearly a year earlier, when she was 56. They were married for 29 years.
Document 10: Heather Mills: Heather Anne Mills (born 12 January 1968) is an English media personality, businesswoman and activist.
Document 11: Helen Molyneux: Helen Molyneux is a Welsh Entrepreneur who founded one of the UK's leading and fastest growing personal injury law firms, NewLaw Solicitors, where she serves as CEO across offices based in Cardiff, Bristol, Basingstoke and Glasgow. On 11th March 2011 Helen won "Best Women in Legal Business", further proceeding to win overall Welsh Women of the Year for her unique, alternate business model (ABM) . Of which, on 24th April 2012 became the 1st Welsh and 4th overall practice to be licensed as an ABM by the Solicitors Regulation Authority. Helen's idea originated when she met a gentleman on a train from London, talking about the insurance market as he owned an insurance brokers. They came up with the idea of creating a law firm that manages personal injury claims from insurance companies and brokers.
Document 12: Drive (Alan Jackson album): Drive is the tenth studio album by American country music artist Alan Jackson. Released in 2002 on Arista Nashville, the album produced Jackson's highest-debuting single on the Hot Country Songs charts in the Number One hit "Where Were You (When the World Stopped Turning)", a ballad written in response to the September 11, 2001 terrorist attacks. "Drive (For Daddy Gene)", "Work in Progress", and "That'd Be Alright" were also released as singles, peaking at #1, #3, and #2, respectively, on the same chart; "Designated Drinker" also reached #44 without officially being released. In addition, all four released singles crossed over to pop radio and cracked the Top 40 on the Billboard Hot 100, peaking at #28, #28, #35 and #29, respectively
Document 13: Driving World Tour: The Driving World Tour was Paul McCartney's first concert tour of the 21st century and of any kind since 1993's New World Tour. For the first time in nearly a decade, McCartney returned to the road following the death of first wife, Linda McCartney, the death of George Harrison, and 9/11. This was in promotion of his 2001 album "Driving Rain". Paul "Wix" Wickens returned on keyboards and is credited as Musical Director. New to the fold were Americans Rusty Anderson, Brian Ray, and Abe Laboriel Jr. Paul McCartney's then-fiancée Heather Mills accompanied him on the tour and was in the audience for every American performance.
Document 14: Drowned World Tour: Drowned World Tour was the fifth concert tour by American singer-songwriter Madonna in support of her seventh and eighth studio albums "Ray of Light" and "Music". It was also her first tour in eight years, following The Girlie Show World Tour in 1993. The tour was supposed to start in 1999, but was delayed until 2001 as Madonna gave birth to her son, got married to Guy Ritchie, was working on "Music", and was busy filming "The Next Best Thing". When the tour was decided, Madonna appointed Jamie King as choreographer and the tour was planned in a short timespan of three months, including signing up the dancers, musicians and technicians. Designer Jean-Paul Gaultier was the costume designer who designed the costumes in such way that they indicated different phases of Madonna's career. The poster and logo for the tour included references to Kabbalah, which Madonna studied.
Document 15: Fashion for Relief: Fashion for Relief is a charitable organization founded in 2005 that has raised funds for various environmental and humanitarian causes. It holds events in association with the London-based non-profit organization CARE. Fashion for Relief donates to international charitable organizations to bring aid to people in crises in various countries. Its spokeswoman is Naomi Campbell, who attracts high-profile individuals in the fashion, film, music, and television industries to participate in the show. The fashion show has been hosted in Cannes, Dar es Salaam, London, Moscow, Mumbai and New York City. Since 2012, the online retailer YOOX has partnered with Fashion for Relief.
ground_truth: 12 January 1968