Question: Rani was best known for the song that was actually sung by a woman who is from what South Indian state?

Context paragraphs:
Anuradha Sriram: Anuradha Sriram (born 9 July 1970) is an Indian carnatic and playback singer who hails from the South Indian state of Tamil Nadu.  She has sung more than 5000 songs in Tamil, Telugu, Malayalam, Kannada and Hindi films.

Vatapi Ganapatim: Vatapi Ganapatim, also known as Vatapi ganapatim bhaje ham or Vatapi ganapatim bhaje, is a Sanskrit "kriti" song by the South Indian poet-composer Muthuswami Dikshitar (1775–1835), one of the "Trinity of Carnatic music".  The panegyrical hymn praises Vatapi Ganapati, Ganesha (Ganapati) worshipped in a shrine in Tiruchenkattankudi in the Indian state of Tamil Nadu.  The hymn is composed in Hamsadhvani raga (musical mode), however in tradition of kritis, individual performers add their own variations in the tune.  "Vatapi Ganapatim" is described as the best-known piece of Muthuswami Dikshitar as well as one of the most popular compositions of Carnatic music (South Indian classical music school).  The hymn is traditionally sung at the beginning of many Carnatic music concerts.

K. S. Chithra: Krishnan Nair Shantakumari Chithra, often credited as K. S. Chithra or simply Chithra, is an Indian playback singer from Kerala.  Chithra also sings Indian classical, devotional, and popular music.  She has sung in a number of Indian languages as well as Urdu, Latin, Arabic, Sinhalese and English.  She has recorded more than 25,000 Songs for various films and albums.  She is a recipient of six National Film Awards, seven Filmfare Awards South and 34 different state film awards.  She has won all the four south Indian state film awards.  She was honored with India's civilian honor Padma Shri in 2005.  She is considered to be the first Indian woman to be honoured by House Of Commons, British Parliament, United Kingdom.  She is considered to be the only South Indian female singer who presented her maiden concert in the world's prestigious concert hall Royal Albert Hall in London.  She is considered to be the only singer from India who was honoured in Qinghai International Music and Water Festival by the Government of China.  Her song "Kannalane/Kehna Hi Kya" from the film "Bombay" (1995) was included in "The Guardian"'s "1000 Songs Everyone Must Hear" list.  Chithra is referred to as "Chinna Kuyil" (English: Little Nightingale) or "Keralathinte Vanambadi" (English: Nightingale of Kerala) or "Nightingale of South India".

Culture of Kochi: Kochi, formerly known as Cochin, is a city and port in the Indian state of Kerala.  The culture of the city can be termed as predominantly South Indian. Residents of Kochi are known as Kochiites; they are an important part of the South Indian weltanschauung.  However, the city's culture is rapidly evolving, with Kochiites generally becoming more cosmopolitan in their outlook.

Malaysian Indian cuisine: Malaysian Indian cuisine, or the cooking of the ethnic Indian communities in Malaysia consists of adaptations of authentic dishes from India, as well as original creations inspired by the diverse food culture of Malaysia.  Because the vast majority of Malaysia's Indian community are of South Indian descent, and are mostly ethnic Tamils who are descendants of immigrants from a historical region which consists of the modern Indian state of Tamil Nadu and Sri Lanka's Northern Province, much of Malaysian Indian cuisine is predominantly South Indian inspired in character and taste.  A typical Malaysian Indian dish is likely to be redolent with curry leaves, whole and powdered spice, and contains fresh coconut in various forms.  Ghee is still widely used for cooking, although vegetable oils and refined palm oils are now commonplace in home kitchens.  Before a meal it is customary to wash hands as cutlery is often not used while eating, with the exception of a serving spoon for each respective dish.

Red Guard's March: "The Red Guards' March" (Finnish: Punakaartin Marssi) is a Finnish working class song.  It is one of the best known songs of the "Reds" during the Finnish Civil War in 1918, but was actually sung already before the war.  Even though the lyrics for the march were written in Finnish, the melody has been taken from two Swedish and German folk songs.  The writer of the lyrics is unknown.

Erode: Erode (] ) is a city in the South Indian state of Tamil Nadu once part of great Kongu Nadu.  Erode is the seventh largest urban agglomeration in Tamil Nadu and is the administrative headquarters of Erode District.  Located on the banks of River Kaveri, it was part of historical Kongu Nadu and has been ruled at different times by the Cheras, Early Pandyas, Medieval Cholas, Later Cholas, Vijayanagar Empire, Madurai Nayaks, kingdom of Mysore, Carnatic kingdom and the British.  It is situated at the centre of the South Indian Peninsula, about 400 km southwest of the state capital Chennai and about 80 km east of Coimbatore.

Un canto a Galicia: Un canto a Galicia is 1972 album by Julio Iglesias.  The song of the same name which is actually sung in the Galician language also known as Galego, and it was one of Iglesias's best known hits which led to him being known all over Europe and one of the top three artists in Latin America by 1975. " Billboard" cites it as Iglesias's "first big sales success", and that he also recorded it in Japanese and German, with notable success in Europe, Japan and Mexico.

Rani (Tamil actress): Rani also known as Raksha is an Indian actress who appears in Tamil, Telugu, Kannada and Hindi films.  She has acted as the heroine in Tamil, Telugu and Malayalam movies.  Some of her movies as heroine "Villu Pattukaran", "Uncle bun", "Johney walker", "Priyapatta kuppu", "Chirunavvula Varamistava", Oka Chinna mata, Manavudu Danavudu, aho Brhamma oho swishya, o paniaipothundhi babu, and apart from some supporting roles in films like "Avvai Shanmughi" and "Gemini".  She is best known for the song "O Podu" from "Gemini", sung by Anuradha Sriram and picturised on her; she is often referred to as "O Podu" Rani.  Also she is very popular by Chinnadana osi chinnadana song from Premalekha Telugu film.  She won Andhra Pradesh government Nandi award for best supporting actress for the film "Nachavule".

Shiva Temples of Tamil Nadu: Lord Shiva has innumerable temples dedicated to him throughout the length and breadth of India.  The most temples are most likely in the South Indian state of Tamil Nadu, where there are 2,500 Shiva temples of importance.  There are several kinds of temples in the South Indian state of Tamil Nadu.

Supporting paragraphs: Rani (Tamil actress) Anuradha Sriram
Answer: Tamil Nadu