Question: Pixie Geldof's mother died of what cause?

Context paragraphs:
Kwanumsa (Kaesong): Kwanŭm-sa is a Korean Buddhist temple located within Taehung Castle on Mt. Chonma near Kaesong, North Korea.  The site is one of the National Treasures of North Korea.  Named after Guanyin, the buddhist bodhisattva of compassion, this small temple is located in the beautiful valley between Mts.  Chonma and Songgo.  The temple was founded in 970 when a monk deposited two marble statues of the goddess in a cave behind the temple's current location.  The temple itself was constructed in 1393 under the Koryo Dynasty, and later renovated in 1646 under the Joseon.  The site contains many ancient relics, including a seven-story pagoda from the Koryo dynasty and the ancient Guanyin statues in Kwanum Cave.  The doors of the main shrine, known as the Taeung Hall, are decorated with carved flowers and leaves; an old legend relays why the decorations on one door are unfinished.  During the reconstruction of the temple during the Joseon dynasty, one of the main carvers was a twelve-year-old boy named Unna, famed for his skill in carving.  One day, while working on the temple, he heard his mother was seriously ill, and asked to be allowed to visit her.  He was refused, and his mother died shortly after.  He blamed himself and his skillful hands for his mother's death, and so out of grief used his carving axe to chop off his hand.  He then disappeared into the forest, never to be seen again.  Today, a carving of a boy with one hand ascending to heaven on the back of a white tiger can still be seen on the unfinished door.

Yo Hitoto: Yo Hitoto (一青 窈 , Hitoto Yō , born September 20, 1976) is a Japanese pop singer.  Her mother is Japanese and her father is Taiwanese.  She can speak three languages: Japanese, English, and Mandarin.  Tae Hitoto is her older sister.  Her name Hitoto is not her real surname, it is her mother's maiden name.  She changed her name when she came to Japan.  Her father died when she was very young, and her mother died when she was 16.

On Our Own (film): The film starts with Peggy Williams's mother talking to her on the phone asking her to start from the beginning of the story.  An ambulance rushes to the hospital with the mother of four children.  It then goes by the children's apartment to tell them their mother died.  The four children, Mitch, Kate, Travis, and Lori go to the Los Angeles Courthouse with their neighbor, Mrs. Forsythe.  She tells the judge they have no family and that she is unable to take them in.  Kate tells the judge and Mr. Arnold that they have an Uncle Jack, but they don't believe Kate and the Judge decides to put them in a foster home until they get adopted.  In the foster home a grumpy nurse yells at Travis and Lori for jumping on a bed when Mr. Arnold comes in and tells them that Lori is going to be adopted.  Mitch is angry that he didn't tell them they would be split up and makes a plan to run away.  They escape to their old home where Mitch collects all the money he can find, (9 dollars), and his Uncle Jack's address, knowing Jack will know where their father is.  They also manage to get their dog back.  They then get into their mother's old car and drive away, with neighbors spotting them.

Ruth Rappaport: Ruth Rappaport (May 27, 1923 – November 17, 2010) was a Jewish-American librarian.  Her mother's cousin was Helena Rubinstein.  Rappaport was born in Leipzig, in Saxony; her family moved to Switzerland in 1938.  She later came to America.  Her parents returned to Germany, and in 1943 her father died in Buchenwald and her mother died in Ravensbrueck.

1962 Mexico City radiation accident: In March–August 1962, a radiation incident in Mexico City occurred when a ten-year-old boy took home an unprotected industrial radiography source.  Four people died from overexposure to radiation from a 5-Ci cobalt-60 capsule, an industrial radiography orphaned source that was not contained in its proper shielding.  For several days, the boy kept the capsule in his pocket, then placed it in the kitchen cabinet of his home in Mexico City.  Having obtained the source on March 21, the boy died 38 days later on April 29.  Subsequently, his mother died on July 10; his 2-year-old sister died on August 18, and his grandmother died on October 15 of that year.  The boy's father also received a significant dose of radiation, however he survived.  Five other individuals also received significant overdoses of radiation.

Rose Porter: Rose Porter (6 December 1845 - 10 September 1906) was an American religious novelist.  She was born in New York, New York.  Her father, David Collins Porter, was a wealthy New Yorker.  He died in 1845, while Rose was an infant.  Her mother, Rose Anne Hardy, was the daughter of an English army officer.  Porter's early years were spent in New York and in the family's summer home in Catskills-on-the-Hudson.  She was educated in New York, with the exception of a year abroad.  After completing her education, she and her mother made their home in New Haven, Connecticut.  After the mother died, Porter kept her home in New Haven, where she lived with her servants.  Her first success was "Summer Drift-Wood for the Winter Fire".  Notwithstanding the fact that she was an invalid for years, Porter was a writer of quiet religious romance, publishing or editing 70 volumes.

List of The Saddle Club characters: Carole is a bright African American girl with a natural riding ability.  She became devastated when her mother died of cancer, and when Cobalt died, she almost gave up riding.  But her father, U.S. Marine Colonel Mitch Hanson, reminded Carole that her mother would have wanted her to follow her passion.  With money left by her mother, she bought a buckskin gelding, Starlight.  Carole knows her future lies with horses, but there are many paths to follow and she does not know which road to take.  Her grades are high enough for her to become a veterinarian but she would also love to breed and train Thoroughbreds.  She would not mind being a professional steeplechase jockey, or maybe traveling the world teaching dressage clinics.  Whatever career she chooses, her most immediate goal is to be the very best rider she can be.  Carole has little time for boys; therefore, she has never understood why anyone would prefer the company of a boy to that of a horse.  This is when the pressures of family, friends, school and competition cannot touch her.  Anyone who catches a glimpse of horse and rider moving as one along the lush creek cannot help but be in awe.  Like the other Saddle Club girls, Carole is becoming a young woman.  In "Moving On, Part 1", Carole's dad got re-deployed and she almost left Pine Hollow, The Saddle Club, and Starlight behind forever when it was decided that she'd live with her Aunt Penny.  Thanks to Mrs. Reg, however, Carole becomes the first live in boarder at Pine Hollow Stables as of "Moving On, Part 2" which allowed her to stay at Pine Hollow, continue to be in The Saddle Club, and keep Starlight.  Carole has never forgiven Veronica for killing Cobalt.  In "Itchy", Carole thought that she was allergic to horses, but after a visit to the doctor it was revealed that she is allergic to camels as the saddle blanket that her father sent her is made out of camel hair.  When Carole suggests naming Samson after "Samson and Delilah", it was a hinted indication that Carole is a Christian.  Whenever Carole's sad, to cheer herself up she'll ride Starlight or play her guitar.  Carole is focused, determined, stubborn, and passionate just like her mother was.  In the books, Carole and Lisa go to Willow Creek Junior High School together and Carole and Stevie are the same age.  in the "Pine Hollow" series Carole goes to Willow Creek High School with Lisa.  Carole's favorite color is Purple.

Yogamaharishi Swami Gitananda: Yogamaharishi Dr Swami Gitananda Giri Guru Maharaj was born on 24 July 1907, in Maharajganj, northern India, to an Irish mother and a Sindhi father.  His father, Sukraj Bhavanani, was a High court Advocate in the Patna High Court and an extensive landowner.  His mother Leelavathi was converted to Hinduism through the Arya Samaj rites.  Yogamaharishi received his early schooling at home from his mother.  Tragically, his mother died when he was but eight years of age.  When he was ten years, his Guru, the great Siddha and Master, Yogamaharishi Swami Kanakananda Bhrigu, (Ram Gopal Majumdar) entered his life.  For six years, he studied in the Guru Kula of his Master, imbibing not only the traditional education, but also the great mystic sciences of Yoga, Tantra and Yantra.

Pixie Geldof: Little Pixie Geldof (born 17 September 1990) is an English model and singer.  She is the third daughter of Bob Geldof and Paula Yates.

Paula Yates: Paula Elizabeth Yates (24 April 1959 – 17 September 2000) was an English television presenter and writer, best known for her work on two television programmes, "The Tube" and "The Big Breakfast".  She was in a relationship with musician Bob Geldof from 1976 to 1996.  She died of a heroin overdose in 2000.

Supporting paragraphs: Pixie Geldof Paula Yates
Answer: a heroin overdose