Question: Where is the production company for Kal Ho Naa Ho based?

Context paragraphs:
Kal Ho Naa Ho (song): Kal Ho Naa Ho (Hindi: कल हो ना हो , English: "Tomorrow May Never Come") is a Hindi song from the 2003 Hindi film "Kal Ho Naa Ho" directed by Nikhil Advani.  The song is one of the most popular Hindi film songs all time.

Ketki Dave: Ketki Dave (née: Joshi on 13 August 1960) is an Indian actress.  She has starred in over 75 Gujarati films; and notable Hindi films including "Aamdani Atthanni Kharcha Rupaiya", "Money Hai Toh Honey Hai", "Kal Ho Naa Ho", and "Hello!  Hum Lallan Bol Rahe Hain".  She also has many television credits to her name, some of which are "Nach Baliye 2", "Bigg Boss", "Kyunki Saas Bhi Kabhi Bahu Thi", and "Behenein".  Ketki had acted in Zee TV serial "Ye Dil Kya Kare" in 2001.

Arjun Kapoor: Arjun Kapoor (] ; born 26 June 1985) is an Indian actor who appears in Bollywood films.  He is the son of film producers Boney Kapoor and Mona Shourie Kapoor.  After working as an assistant director and associate producer on several films, including "Kal Ho Naa Ho" (2003) and "Wanted" (2009), he made his acting debut with Habib Faisal's romantic drama "Ishaqzaade" (2012), for which he was nominated for the Filmfare Award for Best Male Debut.

Dharma Productions: Dharma Productions Pvt. Ltd. is an Indian production and distribution company established by Yash Johar in 1979.  It was taken over in 2004 after his death by his son Karan Johar.  Based in Mumbai it mainly produces and distributes Hindi films.

Ravi Khote: Ravi "Rags" Khote is a playback singer for films in India, he is known for his raps between stanzas.  Some of his songs include "Style" from "", "Rabba Rabba" from "Allah Ke Banday", and "Pretty Woman" from "Kal Ho Naa Ho".

Shoma Anand: Shoma Anand (born 16 February 1958) is an Indian television and film actress.  Although she has played frequently supporting roles or made cameo appearances throughout the 1980s and 1990s, she started her career opposite Rishi Kapoor as lead actress in Pramod Chakraborty's superhit romantic-crime movie "Barood", then played a good role in "Patita" produced and directed by the same person.  She had a few other films in which she was the lead, such as "Jagir" and "Coolie" in the 1980s.  From the late 1990s to present she has played minor and supporting roles in films like "Jaise Karani Waisi Bharani", "Coolie", "Hungama", "Kyaa Kool Hai Hum" and "Kal Ho Naa Ho".

Kal Ho Naa Ho: Kal Ho Naa Ho (English: "Tomorrow May Never Come"), abbreviated as KHNH, is a 2003 Indian romantic drama, directed by debutant director Nikkhil Advani.  The film was written by Niranjan Iyengar and Karan Johar and produced by Yash Johar and Karan Johar under their Dharma Productions banner.  The soundtrack for the film was composed by Shankar-Ehsaan-Loy, with lyrics written by Javed Akhtar.

Saif Ali Khan: Saif Ali Khan (] ; born Sajid Ali Khan on 16 August 1970) is an Indian film actor and producer.  The son of actress Sharmila Tagore and the late cricketer Mansoor Ali Khan Pataudi, Khan made his acting debut in Yash Chopra's unsuccessful drama "Parampara" (1993), but achieved success with his roles in the romantic drama "Yeh Dillagi" and the action film "Main Khiladi Tu Anari" (both 1994).  Khan's career prospect declined through much of the 1990s, and his biggest commercial success of the decade came with the ensemble drama "Hum Saath-Saath Hain" (1999).  He rose to prominence with roles in two ensemble comedy-dramas"Dil Chahta Hai" (2001) and "Kal Ho Naa Ho" (2003).

Southern Seed: Southern Seed Joint Stock Company "(HCM:SSC)" is a hybrid seed company based in Vietnam.  SSC researches, produces and trades rice, corn and vegetable seeds.  Secondary activities include the production and trade of agricultural products and animal husbandry supplies, seed processing machinery and agricultural chemicals.  The company has main offices in Ho Chi Minh City, a branch in Hanoi and a branch office in Phnom Penh.  Southern Seed operates six manufacturing facilities and employs over 300 people.  It is listed at the Ho Chi Minh Securities Trading Center.

Ho Ho Ho: Ho Ho Ho, also known as VH-1 Presents RuPaul: Ho Ho Ho, is a 1997 Christmas album and third overall by American singer and drag queen RuPaul.  It was released on October 28, 1997 by Rhino; it is RuPaul’s first album featuring Christmas music and serves as a follow-up to "Foxy Lady" (1996).  RuPaul co-produced the album with American music producers Fenton Bailey and Randy Barbato, who both work for the production company World of Wonder.  "Ho Ho Ho" consists of ten tracks, including eleven covers of Christmas standards and carols, and three original songs written by Joe Carrano and the singer.  The album was frequently referenced as an example of camp though RuPaul did specify that he recorded several more serious covers, specifically "All Alone on Christmas" and "Hard Candy Christmas".

Supporting paragraphs: Kal Ho Naa Ho Dharma Productions
Answer: Mumbai