Question: Who was the actress that overcame breast cancer and played a part in I Know Why the Caged Bird Sings?

Context paragraphs:
Breakthrough Breast Cancer: Breakthrough Breast Cancer was a United Kingdom charity whose mission was to "save lives through improving early diagnosis, developing new treatments and preventing all types of breast cancer".  In 2015, Breakthrough Breast Cancer merged with another UK charity, Breast Cancer Campaign, to form the UK's largest breast cancer research charity - Breast Cancer Now.

Breast Cancer Campaign: Breast Cancer Campaign was a breast cancer research charity based in the United Kingdom.  In 2015, Breast Cancer Campaign merged with another charity, Breakthrough Breast Cancer, to form the UK's largest breast cancer research charity - Breast Cancer Now.

I Know Why the Caged Bird Sings (film): I Know Why the Caged Bird Sings is an American television film based on the autobiography of the same name by Maya Angelou, first aired April 28, 1979 on CBS.  Angelou and Leonora Thuna wrote the screenplay, and the movie was directed by Fielder Cook.  Constance Good played the young Maya Angelou.  Also appearing were Esther Rolle, Roger E. Mosley, Diahann Carroll, Ruby Dee, and Madge Sinclair.  Filming took place in Vicksburg, Mississippi.

I Know Why the Caged Bird Sings: I Know Why the Caged Bird Sings is a 1969 autobiography about the early years of American writer and poet Maya Angelou.  The first in a seven-volume series, it is a coming-of-age story that illustrates how strength of character and a love of literature can help overcome racism and trauma.  The book begins when three-year-old Maya and her older brother are sent to Stamps, Arkansas, to live with their grandmother and ends when Maya becomes a mother at the age of 16.  In the course of "Caged Bird", Maya transforms from a victim of racism with an inferiority complex into a self-possessed, dignified young woman capable of responding to prejudice.

Diahann Carroll: Diahann Carroll ( ) (born Carol Diahann Johnson, July 17, 1935) is an American television and stage actress and singer known for her performances in some of the earliest major studio films to feature black casts, including "Carmen Jones" (1954) and "Porgy and Bess" (1959) as well as on Broadway. " Julia" (1968) was one of the first series on American television to star a black woman in a nonstereotypical role and was followed by her portrayal of Dominique Deveraux in the primetime soap opera "Dynasty" over three seasons.  She is the recipient of numerous stage and screen nominations and awards, including the Golden Globe Award for "Best Actress In A Television Series" in 1968.  A breast cancer survivor and activist, Carroll was scheduled to return to the Broadway stage in the 2014 revival of "A Raisin in the Sun" as Mama, but withdrew prior to opening citing the demands of the rehearsal and performance schedule.

Fashion Targets Breast Cancer: Fashion Targets Breast Cancer is a charity campaign originally launched in the UK in 1996 by Breakthrough Breast Cancer, and now operated under the charity's new name Breast Cancer Now.  Corporate partners for the campaign represent famous high-street brands, including M & S, Topshop, and River Island.  M & S has sold a wide range of charitable women's clothes for Breast Cancer Now for many years.  The campaign is best known for its famous 'target' logo T-shirt designed by Ralph Lauren.  Since 1996, Fashion Targets Breast Cancer has raised over £14 million to fund pioneering breast cancer research.

ICanServe Foundation: ICanServe Foundation, Inc., formerly Information on Breast Cancer and Other Services, is a non-stock, non-profit organization that advocates early breast cancer detection through breast self-examination.  Based in Manila, Philippines, and co-founded in 1999 by journalist Kara Magsanoc-Alikpala, a breast cancer survivor, the advocacy group empowers women with breast cancer and women cancer-related information so they can have a voice in their own health care.  Its mission is to arm women with breast care health and breast cancer information so they can make informed decisions about their health.  It also provides access to special services that will help the breast cancer survivor recover and heal more effectively.

Gather Together in My Name: Gather Together in My Name (1974) is a memoir by American writer and poet Maya Angelou.  It is the second book in Angelou's series of seven autobiographies.  The book begins immediately following the events described in "I Know Why the Caged Bird Sings", and follows Angelou, called Rita, from the ages of 17 to 19.  Written three years after "Caged Bird", the book "depicts a single mother's slide down the social ladder into poverty and crime."  The title of the book is taken from the Bible, but it also conveys how one black female lived in the white-dominated society of the U.S. following the Second World War.

Shaker, Why Don't You Sing?: Shaker, Why Don't You Sing?  is author and poet Maya Angelou's fourth volume of poetry, published by Random House in 1983.  It was published during one of the most productive periods in Angelou's career; she had written four autobiographies and published three other volumes of poetry up to that point.  Angelou considers herself a poet and a playwright, but is best known for her seven autobiographies, especially her first," I Know Why the Caged Bird Sings", although her poetry has also been successful.  She began, early in her writing career, alternating the publication of an autobiography and a volume of poetry.  Many of the poems in "Shaker "focus on survival despite threatened freedom, lost love, and defeated dreams.  Over half of them are love poems, and emphasize the inevitable loss of love.  "Caged Bird", which refers to Angelou's first autobiography, is contained in this volume.

Edna Campbell: Edna Campbell (born November 26, 1968) is the Founder and Program Director of Breathe and Stretch, a health restoration program for breast cancer survivors.Edna also authored "The Breast Cancer Recovery Manual".  This manual is a guide for breast cancer survivors to recover from breast cancer surgeries and treatments.  The Breast Cancer Recovery Manual is based on Edna's personal recovery from breast cancer and return to perform as a professional athlete in the WNBA.  Edna is a retired women's basketball player who played in the Women's National Basketball Association (WNBA).  The 5 ft 8 in guard played with the Sacramento Monarchs as well as three other teams, but is well known for continuing to play despite suffering breast cancer.  In 2004, she was designated a Women's History Month honoree by the National Women's History Project.  Campbell was born in Philadelphia, Pennsylvania.

Supporting paragraphs: I Know Why the Caged Bird Sings (film) Diahann Carroll
Answer: Diahann Carroll