Question: What symbol did a Ghanaian stateswoman, teacher and artist known for designing Ghana's flag in 1957 use in that flag?

Context paragraphs:
Susan Ofori-Atta: Susan Gyankorama Ofori-Atta also de-Graft Johnson (1917 – †1985) was a Ghanaian physician - the first female doctor in the Gold Coast.  Susan Ofori-Atta was the first Ghanaian woman and third West African woman to earn a university degree.  Ofori-Atta was also the second West African woman to become a physician after Nigerian, Agnes Yewande Savage.  In 1933, Sierra Leonean political activist and higher education pioneer, Edna Elliot-Horton became the second West African woman university graduate and the first to earn a bachelor's degree in the liberal arts.  Eventually she became a medical officer-in-charge at Kumasi Hospital, and later, she assumed charge of the Princess Louise Hospital for Women.  Her contemporary was Matilda J. Clerk, the second Ghanaian woman and third West African woman to become a physician, who incidentally was also educated at Achimota and Edinburgh.  Susan Ofori-Atta was made an Honorary Doctor of Science by the University of Ghana for her work on malnutrition in children, and received the Royal Cross from Pope John Paul II when he visited Ghana in 1980 in recognition of her offering of free medical services at her clinic.  She helped to establish the "Women's Society for Public Affairs" and was a Foundation Fellow of the Ghana Academy of Arts and Sciences.  Her achievements were a symbol of inspiration to aspiring women physicians in Ghana.

Ulster Banner: The Ulster Banner (Ulster-Scots: "Ulstèr Bannèr"; Irish: "Meirge Uladh" ) is a heraldic banner taken from the former coat of arms of Northern Ireland, consisting of a red cross on a white field, upon which is a crowned six-pointed star with a red hand in the centre.  It was the flag of the former Government of Northern Ireland and common flag of Northern Ireland from 1953 until that government was abolished in 1972.  It was adopted to mark the coronation of Queen Elizabeth II, and was first flown over Parliament Buildings on 1 July 1953, in honour of the Queen's visit.  The Minister of Home Affairs announced that, while the Union Jack was the only standard officially recognised, those who wished to have a distinctive Ulster symbol might use the banner.  Since 1972, the Ulster Banner has had no official status and is not used by the current Northern Ireland government or by the British government.  However, the Ulster Banner is still in common use by loyalists/unionists, and to represent Northern Ireland internationally in some sporting competitions.  It has become a symbol of Ulster loyalism and is a contentious symbol.  In recent years there have been calls for a new, neutral flag for Northern Ireland to replace the Ulster Banner.

Black Star of Africa: The Black Star of Africa is a black five-pointed star (★) symbolizing Africa in general and Ghana in particular.  The Black Star Line, founded in 1919 by Marcus Garvey as part of the Back-to-Africa movement, modelled its name on that of the White Star Line, changing the colour from white to black to symbolise ownership by black people rather than white people.  The black star became a symbol of Pan-Africanism and anti-colonialism.  Described as the "Lodestar of African Freedom", the black star was used in 1957 by Theodosia Okoh in the design of the Flag of Ghana.

Red flag (politics): In politics, a red flag is predominantly a symbol of socialism, communism, and left-wing politics; it has been associated with left-wing politics since the French Revolution (1789–99).  Socialists adopted the symbol during the Revolutions of 1848 and it became a symbol of communism as a result of its use by the Paris Commune of 1871.  The flags of several communist states, including China, Vietnam and the Soviet Union, are explicitly based on the original red flag.  The red flag is also used as a symbol by some democratic socialists and social democrats, for example the League of Social Democrats of Hong Kong, French Socialist Party and the Social Democratic Party of Germany.  The Labour Party in Britain used it until the late 1980s.  It was the inspiration for the socialist anthem, "The Red Flag".  Due to its strong historical association with French Patriotism and Republicanism it is also occasionally used by right-wing parties, along with the general colour red, as a symbol of those ideologies.

Flag of Ghana: The national flag of Ghana was designed and adopted in 1957 and was flown until 1962, and then reinstated in 1966.  It consists of the Pan-African colours of red, yellow, and green, in horizontal stripes, with a black five-pointed star in the centre of the gold stripe.  The Ghanaian flag was the second African flag after the flag of the Ethiopian Empire to feature these colours.  The flag's design influenced that of the flag of Guinea-Bissau (1973).  It was designed by Theodosia Okoh.

Cubs Win Flag: The Cubs Win Flag is a victory flag that is flown at Wrigley Field after every Chicago Cubs home win.  The flag is variously referred to by approximately a dozen names, combining; either Cubs or Chicago Cubs; Win, W, White, White W, or W Win; and flag, banner or banner flag.  Other common names for the symbol include Chicago Cubs W Win Flag and Chicago Cubs Win Banner Flag.  It has become an important symbol for fans and days when the win flag is flown are known as "White Flag Days".  The tradition of flying a win or loss flag over the stadium began soon after the construction of the scoreboard in 1937.

Theodosia Okoh: Theodosia Salome Okoh (13 June 1922 – 19 April 2015) was a Ghanaian stateswoman, teacher and artist known for designing Ghana's flag in 1957.  She also played a leading role in the development of hockey in Ghana.

Rainbow flag (LGBT movement): The rainbow flag, commonly known as the gay pride flag or LGBT pride flag, is a symbol of lesbian, gay, bisexual and transgender (LGBT) pride and LGBT social movements.  Other uses of rainbow flags include a symbol of peace and the colors reflect the diversity of the LGBT community, as the flag is often used as a symbol of gay pride during LGBT rights marches.  While it originated in Northern California, the flag is now used worldwide.

Pansexual pride flag: The pansexual pride flag was designed as a symbol for the pansexual community to use.  The pansexual pride flag has been found on various internet sites since mid-2010.  It is similar to the LGBT flag, which is used as a symbol for the lesbian, gay, bisexual, and transgender community.  The pansexual pride flag is used to increase visibility and recognition for the pansexual community, and to distinguish it from bisexuality.  It is used to indicate that pansexuals have romantic attractions and relationships with people of different genders and sexualities.  The theory of pansexuality aims to challenge existing prejudices, which can cause judgment, ostracism, and serious disorders within society.

Proposed flags of Taiwan: Several proposals for a flag of Taiwan have been initiated by supporters of formal Taiwan independence to replace the flag of the Republic of China as the national flag flown over Taiwan.  Supporters of Taiwan independence object to the use of the flag of the Republic of China since it was designed by and is closely associated with the Kuomintang.  However, no single flag has been established as the symbol of the independence movement, and moderate supporters of Taiwan independence, such as the Democratic Progressive Party, have accepted the flag of the Republic of China for the time being and have not pushed for a new flag.  The flag of the Republic of China in current use is defined in the 6th article of the Constitution, and amending the Constitution requires a referendum which would only succeed with wide political support.  The Republic of China, originally based in mainland China, retreated to Taiwan in 1949 and established its capital in Taipei.  The country, since then known as "Taiwan", retains its official name "Republic of China" and still officially claims territories governed by the People's Republic of China, as the PRC claims all ROC territories.

Supporting paragraphs: Black Star of Africa Theodosia Okoh
Answer: The Black Star of Africa