Question: Where did Thailand host the inaugural games that included swimming, diving and water polo events?

Context paragraphs:
Aquatics at the 1995 Southeast Asian Games: Aquatics at the 1995 Southeast Asian Games included swimming, diving and water polo events and were held at Aquatic Centre in 700th Anniversary Sport Complex, Chiang Mai, Thailand.  Aquatics events was held between 10 December to 15 December.

Aquatics at the 2001 Southeast Asian Games: Aquatics at the 2001 Southeast Asian Games included swimming, Synchronized swimming, diving and water polo events.  The three sports of aquatics were held in Kuala Lumpur, Malaysia.  Aquatics events was held between 10 September to 18 September.

Aquatics at the 1981 Southeast Asian Games: Aquatics at the 1981 Southeast Asian Games included swimming, diving and water polo events.  The three sports of aquatics were held in Malila, Philippines.  Aquatics events was held between 10 December to 13 December.

Aquatics at the 1977 Southeast Asian Games: Aquatics at the 1977 Southeast Asian Games included swimming, diving and water polo events.  The three sports of aquatics were held in Kuala Lumpur, Malaysia.  Aquatics events was held between 20 November to 24 November.

Aquatics at the 1975 Southeast Asian Games: Aquatics at the 1975 Southeast Asian Peninsular Games included swimming, diving and water polo events.  The three sports of aquatics were held in Bangkok, Thailand.  Aquatics events was held between 11 December to 14 December.

Aquatics at the 1985 Southeast Asian Games: Aquatics at the 1985 Southeast Asian Games included swimming, diving and water polo events.  The three sports of aquatics were held at Aquatic Centre in Sport Authority of Thailand Sport Complex, Bangkok, Thailand.  Aquatics events was held between 9 December to 12 December.

Aquatics at the 1987 Southeast Asian Games: Aquatics at the 1987 Southeast Asian Games included swimming, diving and water polo events.  The three sports of aquatics were held at Senayan Swimming Stadium, Jakarta, Indonesia.  Aquatics events was held between 10 September to 16 September

1975 Southeast Asian Peninsular Games: The 1975 Southeast Asian Peninsular Games, officially known as the 8th Southeast Asian Peninsular Games was a Southeast Asian multi-sport event held in Bangkok, Thailand from 9 to 16 December 1975.  This was the third time Thailand hosted the games, and its first time since 1967.  Previously, Thailand also hosted the 1959 inaugural games.  South Vietnam, Cambodia and Laos, which only sent token squads made up of military personnel to previous games, declined to participate due to internal political problems.  The games is the last games to bear the Southeast Asian Peninsular Games name, before it was renamed the Southeast Asian Games in the next edition of the games.  The games was opened and closed by Bhumibol Adulyadej, the King of Thailand at the Suphalachasai Stadium.  The final medal tally was led by Thailand, followed by host Singapore, Burma and Malaysia.

Aquatics at the 1989 Southeast Asian Games: Aquatics at the 1989 Southeast Asian Games included swimming, diving and water polo events.  The three sports of aquatics were held in Kuala Lumpur, Malaysia.  Aquatics events was held between 23 August to 27 August.

Aquatics at the 1997 Southeast Asian Games: Aquatics at the 1997 Southeast Asian Games included swimming, diving, synchronized swimming and water polo events and were held at Senayan Aquatic Centre in Jakarta, Indonesia.  Aquatics events was held between 11 October to 16 October.

Supporting paragraphs: Aquatics at the 1975 Southeast Asian Games 1975 Southeast Asian Peninsular Games
Answer: South Vietnam, Cambodia