Question: In what year was the well known Indian athlete whom O. M. Nambiar coached born?

Context paragraphs:
Anju Bobby George: Anju Bobby George (born 19 April 1977) is an Indian athlete.  Anju Bobby George made history when she won the bronze medal in Long Jump at the 2003 World Championships in Athletics in Paris.  With this achievement, she became the first Indian athlete ever to win a medal in a World Championships in Athletics jumping 6.70 m.  She went on to win the Gold medal at the IAAF World Athletics Final in 2005, a performance she considers her best.  Anju was upgraded to gold status from silver in the 2005 World Athletics Final in Monte Carlo following the disqualification of Tatyana Kotova of Russia by the International Association of Athletics Federations, following the recent re-testing of the latter’s sample collected at the 2005 World Championship in Helsinki.  She was awarded the Arjuna Award in 2002.

Chitra Singh: Chitra Singh (born Shome) is a well known Indian ghazal singer.  She with her husband Jagjit pulled the ghazal genre out of the drawing room of the elite and brought it to the masses.  Respectfully known as the "king and queen of the Ghazal world," the husband and wife duo created some of the most successful Indian music of the 1970s and '80s.

Anil Singh (athlete): Anil Kumar Singh (born 4 March, 1985) is an Indian track and field athlete from Haryana who specializes in javelin throw.  He is the first Indian athlete to breach the 80-metre barrier in a competition.  Anil Singh holds the current Indian National record of 80.72 metre set at the Asian All Stars athletics championships held in Bhopal on 18 September 2008.  He replaced Satbir Singh's decade-old record of 79.68 metres, registered in Kolkata in October 1998.

Aneil Nambiar: Aneil Padman Nambiar (born 2 March 1984) is a former Indian cricketer.  Nambiar is a right-handed batsman who bowls right-arm medium pace.  He was born at Trivandrum, Kerala, and is more commonly known by his nickname Johnny Nambiar.

O. M. Nambiar: O. M. Nambiar (born 1932) is an Indian athletics coach who was awarded Dronacharya award in 1985.  He coached the well known Indian athlete P. T. Usha.  He hails from Kerala state.

Vikram Gokhale: Vikram Gokhale (occasionally credited as Vikram Gokhle) is a well known Indian film, television and stage actor, notable for his roles in Marathi theatre and Hindi films and television.  He is the son of another well known veteran Marathi theater and film actor, Chandrakant Gokhale.

P. T. Usha: Pilavullakandi Thekkeparambil Usha (born 27 June 1964), popularly known as P. T. Usha, is a retired Indian track and field athlete.  She has been associated with Indian athletics since 1979.  She is often called the "queen of Indian track and field".  She is nicknamed as the Payyoli Express.  Currently she runs the Usha School of Athletics at Koyilandy in Kerala.

John Levi: John "Skee" Levi (June 14, 1898 – January 22, 1946) was an Arapaho Indian athlete, playing college football for the Haskell Indians.  Allegedly Jim Thorpe called him the greatest athlete he'd ever seen.  He then coached at his alma mater.

Shiny Abraham: Shiny Wilson (nee Abraham) (born 8 May 1965) is a retired Indian athlete.  She has been a National Champion in 800 metres for 14 years.  Shiny Abraham Wilson (Shiny Abraham) represented India more than 75 times in international competition.  She holds the added distinction of representing Asia in four World Cups, She is also perhaps the only athlete to have taken part in six Asian Track & Field Meets in a row beginning 1985 in Jakarta.  During this period she won seven gold, five silver and two bronze medals in the Asiad competitions.  She collected a total or 18 gold and two silver medals from the seven South Asian Federation (SAF) Meets she has competed.

Ram Singh Yadav: Ram Singh Yadav (born 7 November 1980) is an Indian marathon runner.  Ram represented India at the 2012 Summer Olympics, London.  He achieved the B qualification standard (2:18:00) by clocking a time of 2:16:59 at the 2012 Mumbai Marathon, which is also his best performance in this event.  He is the second Indian athlete ever to be qualified for the marathon event of the Olympics.  Before Yadav, Shivnath Singh was the Indian athlete who participated in the 1976 Summer Olympics in Montreal.  Ram is a havildar in the Indian Army.

Supporting paragraphs: O. M. Nambiar P. T. Usha
Answer: 1964