Question: When was the Indian lyricist, screenwriter, poet and marketer born who wrote lyrics for London Dreams?

Context paragraphs:
London Dreams: London Dreams is a 2009 Bollywood musical drama film directed by Vipul Shah.  The film features Salman Khan, Ajay Devgan, and Asin in lead roles.  It released on 30 October 2009.  The music was by the trio of Shankar-Ehsaan-Loy with lyrics by Prasoon Joshi.

Pye Dubois: Pye Dubois is a Canadian lyricist and poet.  He has worked mainly with Kim Mitchell and Max Webster (with whom he was considered an unofficial fifth non-performing member), and occasionally Rush.  Dubois would accompany Max Webster in the studio and wrote lyrics for each of their albums.  He was given lyric-writing credits on several Rush songs, most notably "Tom Sawyer".  Dubois wrote the poem "Between the Sun and Moon", which inspired lyricist and drummer Neil Peart to write many of the lyrics for the album "Counterparts".  He is credited as a contributing composer on the song "Test for Echo".

Bhuvana Chandra: Bhuvana Chandra is an Indian lyricist, renowned for his work in the Telugu cinema.  He served in the Indian Air Force for 18 years before turning into a lyricist.  He penned lyrics for more than 2000 songs which include the films of popular Telugu actors like Chiranjeevi, Akkineni Nagarjuna, Pavan Kalyan, and others.  He also wrote more than 100 stories, a novel, and many articles in magazines.  He participated as a judge in some reality shows.  He also acted in the film Welcome Obama directed by Singeetam Srinivasa Rao.

London Dreams (soundtrack): London Dreams is the soundtrack to the 2009 Bollywood film "London Dreams" directed by Vipul Amrutlal Shah starring Salman Khan, Ajay Devgan and Asin.  The music is composed by Shankar-Ehsaan-Loy, while the lyrics are penned by Prasoon Joshi.

Prasoon Joshi: Prasoon Joshi (born 16 September 1971) is an Indian lyricist, screenwriter, poet and marketer.  He is the CEO of McCann World group India and Chairman (Asia Pacific), a subsidiary of global marketing firm McCann Erickson.  He has been appointed as the Chairperson of the Central Board of Film Certification on 11 August 2017.

Junaid Wasi: Junaid Wasi is an Indian Lyricist.  He has written lyrics for the notable Hindi film songs and is active as a lyricist and poet for Bollywood film songs.

Rashmi Singh (lyricist): Rashmi Singh is an Indian lyricist.  She received recognition for writing the lyrics of the song "Muskurane".  She was awarded the "Best Lyricist" award for the song at the Filmfare awards. She was subsequently nominated in the category of the "Lyricist of the year in 2015" for her lyrics writing work in CityLights by the Mirchi Music Awards.

K. Kalyan: K. Kalyan (born 1 January 1975) is an Indian lyricist and music composer predominantly working since last 20 years in Kannada cinema.  He has won several prestigious awards and is popularly called as "Premakavi" ("Love Poet") for his foot tapping music and inspiring lyrics on romance theme.  He is considered to be one of the leading Music composer and lyricist of Kannada cinema.  He is also known for his good gestures in upbringing new talents to the film industry.

Abhayadev: Abhayadev (25 June 1913 - 26 July 2000) was an Indian poet and lyricist during the 1970s in Malayalam movies.  He wrote lyrics for around 500 films and dialogues for 25 Malayalam movies.  He was born as Ayyappan Pillai, to Karimalil Kesava Pillai who was also a well-known poet, at Pallam near Kottayam.  He made his debut in 1949 as lyricist in the film "Vellinakshatram".  He was actively involved in the activities of Sahitya Pravarthaka Cooperative Society (SPCS), Hindi Prachar Sabha, and numerous other social and cultural organisations till his death.  He was awarded the J. C. Daniel Award in 1995.  His grandson Ambilikuttan is a singer.

Bichu Thirumala: Bichu Thirumala (Malayalam: ബിച്ചു തിരുമല ) is an Indian lyricist and poet from Kerala, who works in the Malayalam film industry.  He, along with O. N. V. Kurup, is known for creating the style of arranging beautiful words in Malayalam film songs.  In Malayalam cinema, Thirumala led the group of lyricists who wrote songs for readymade tunes.  In 1981, he won the Kerala State Film Award for the best lyricist for the films "Thrishna" and "Thenum Vayambum".  Thirumala won the same award for the second time in 1991, for the Rajasenan directed film "Kadinjool Kalyanam".

Supporting paragraphs: London Dreams Prasoon Joshi
Answer: 16 September 1971