Question: What was the family relationship between the two writers of "Woman in Love"?

Context paragraphs:
Vietnamese name: Vietnamese personal names generally consist of three parts: one family name, one or more middle name(s), and one given name, used in that order.  The "family name first" order follows the system of Chinese names and is common throughout the Chinese cultural sphere, but is different from Chinese, Korean, and Japanese names in the usage of "middle names", as in China and Korea it exists but is not mandatory, while in Japan it does not exist.  Persons can be referred to by either the whole (full) name, the given name, or a hierarchic pronoun (which usually connotes a degree of family relationship or kinship) in normal usage.

Accidental incest: Accidental incest is sexual activity or marriage between persons who were unaware of a family relationship between them which would be considered incestuous.  When two related people meet as adults and become sexually attracted, it is known as genetic sexual attraction.

Robin Gibb: Robin Hugh Gibb (22 December 1949 – 20 May 2012) was a singer, songwriter and record producer, who gained worldwide fame as a member of the pop group the Bee Gees, with his brothers Barry and Maurice Gibb, his fraternal twin.  Robin Gibb also had his own successful solo career.

Ajumma: Ajumma (Korean: 아줌마 ), sometimes spelled ajoomma, is a respectful Korean word for a married, or marriage aged woman.  It comes from the Korean word "Ajumeoni" (Korean: 아주머니 ).  Although it is sometimes translated "aunt", it does not actually refer to a family relationship.  There is some indication that the word historically meant "wife of a professor".  It is most often used to refer to any middle-aged or older woman since referring to an elder by name without a title in Korea is not socially acceptable.  An ajumma is neither a young unmarried woman ("agassi") or grandmother ("halmoni").  Typically she would be a married woman with children, although not necessarily so.  On the other hand, the Korean word "Samo'nim", was originally interpreted as "wife of mentor" or "wife of superior", describes a married woman of high social status.  The Lonely Planet guide to Seoul describes ajumma as a term of respect, but it can be used in a mildly pejorative sense as well.  An ajumma is often a restaurant worker, street vendor, or housewife.

Conjugal family: A conjugal family is a nuclear family consisting of a married couple and their children (by birth or adoption) who are unmarried and underage.  Conjugal means there is a marriage relationship.  The family relationship is principally focused inward and ties to extended kin are voluntary and based on emotional bonds, rather than strict duties and obligations.  The spouses and their children are considered to be of prime importance, and other more distant relatives less important.  The marriage bond is important and stressed.  Families have evolved over time by becoming more modern.  There are now same sex parents, step parents, adoptive parents so, the name conjugal family was created.  It is a much more modern term for nuclear family.

Fitzpatrick v Sterling Housing Association Ltd: Fitzpatrick v Sterling Housing Association Ltd was a 1999 legal case heard by the Judicial Committee of the House of Lords regarding the meaning of the word 'family' with regards to the Rent Act 1977.  The Lords found that a gay couple living together could be seen as a family for the purposes of housing law, and that a family relationship did not require either a blood relationship (as between parent and child) or marriage (at the time, neither marriage nor civil partnerships were available for same-sex couples).

Khentkaus I: Khentkaus I, also referred to as Khentkawes, was a Queen of Ancient Egypt during the 4th dynasty.  She may have been a daughter of pharaoh Menkaure, wife of both kings Shepseskaf and Userkaf and mother of Sahure.  Her Mastaba at Giza - tomb LG100 - is located very close to Menkaure's pyramid complex.  This close connection may point to a family relationship, but it is not quite clear exactly what that relationship is.

Woman in Love: "Woman in Love" is a song performed by Barbra Streisand and taken from her 1980 album, "Guilty".  The song was written by Barry and Robin Gibb of the Bee Gees, who received the 1980 Ivor Novello award for Best Song Musically and Lyrically.  It is her fourth of four Platinum records, and is considered her greatest international hit.

Love at First Fight: Love At First Fight () is a 2007 Chinese martial arts and romantic comedy television series, starring Hong Kong actress singer Miriam Yeung, Taiwanese actor singer Wallace Huo, American-born-Taiwanese actor George Hu, Chinese actress Zhang Meng, Bai Xue and actor Jia Nai Liang.  Filmed in the summer of 2006 at Qingsheng Studios located in Shanghai, China.  The drama was also dubbed in Cantonese for the Hong Kong market.  It began airing on Chinese channel Haikou 海口電視台 HKBTV in 2007 and aired on Taiwanese channel FTV in 2008.  The story is set in early Republic China era, where the main character Wu Shi Lang has to tackle friendship, dreams, family relationship, and first love with a gender twist.

La Copa Junior: The Mexican professional wrestling promotion Consejo Mundial de Lucha Libre (CMLL) has held the La Copa Junior ("The Junior Cup") tournament on an infrequent schedule since 1996.  The tournament pays respect to the fact that wrestling is a family tradition in Lucha libre, with a large number of second or even third generation wrestlers following the footsteps of their relatives.  So far CMLL has held seven tournaments starting in 1996 and then intermittently in 2005, 2006, 2010, 2012 and two tournaments in 2014.  The seventh "La Copa Junior" tournament has been announced for January 2016.  While most of the family relationships are real there are a few instances of the family relationship being a storylines family relationship, such as Dragón Rojo Jr. being billed as the grandson of Dragón Rojo, when in reality that is simply a storyline created by CMLL.  As of the 2014 VIP tournament there have been seven "La Copa Junior" tournaments promoted by CMLL, a total of 60 wrestlers have competed in one or more tournaments with, Shocker and Volador Jr. having the record for most tournaments, five each.

Supporting paragraphs: Woman in Love Robin Gibb
Answer: brothers