Question: What phenomenon is named after the Phaya Naga and what the Mekhong Full Moon Party film is about?

Context paragraphs:
Full Moon o Sagashite: Full Moon o Sagashite (満月（フルムーン）をさがして , Furu Mūn o Sagashite , literally "Searching for the Full Moon") is a Japanese shōjo manga by Arina Tanemura.  According to the furigana, the kanji 満月 in the title are read "furu mūn" ("full moon") and not "mangetsu" or "mitsuki", the Japanese words for the full moon.  In North America, the series is published as Full Moon, although the full title is given on the front cover.

Naga fireball: Naga fireballs (Thai: บั้งไฟพญานาค ; rtgs: bang fai phaya nak ), also known as bung fai paya nak or Mekong lights, are a phenomenon said to be often seen on the Mekong River.  Glowing balls are alleged to naturally rise from the water high into the air.  The balls are said to be reddish and to range in size from smaller sparkles up to the size of basketballs.  They quickly rise up to a couple of hundred metres before disappearing.  The number of fireballs reported varies between tens and thousands per night.  The phenomenon is named after the Phaya Naga, legendary serpentine creatures said to live in the Mekong.

Last Stop for Paul: Last Stop for Paul is a 2006 independent film by Neil Mandt.  It chronicles the journey of two men to the Full Moon Party in Thailand.  The film is notable in that there was no crew and no casting.

Full Moon Party: The Full Moon Party is an all-night beach party that originated in Haad Rin on the island of Ko Pha Ngan, Thailand on the night of, before or after every full moon.  It is mostly attended by tourists.

Full Moon Hotel: The Full Moon Hotel was a proposed building in Baku, Azerbaijan on the western shore of the Caspian Sea.  Hotel Full Moon's design originally appeared as a disc with rounded edges and a hole in one of the top corners, with aspects that appear radically different according to the angle it is seen from.  The front aspect is reminiscent of a glass Death Star but from the side profile it looks much like any ordinary glass tower.  The Full Moon Hotel was planned to counterpoint to the Aypara (Crescent Moon) Tower under construction around the bay in front of the Port Baku buildings adding to the 'new Dubai' feel of the city's 21st-century architecture.

Mekhong Full Moon Party: Mekhong Full Moon Party (Thai: 15 ค่ำ เดือน 11 ; rtgs: Sip Ha Kham Duean Sip Et ; literally, "The 15th Day of the 11th Month") is a 2002 Thai comedy-drama about the Naga fireballs that arise from the Mekong at Nong Khai on the full moon in October.  Written by Jira Maligool, the film was also Jira's directorial debut.

List of Full Moon Features productions: This is a list of all films produced by Full Moon Features.  Note that this does not include any films that were produced by Charles Band prior to the creation of Full Moon, even though Full Moon now distributes some of them, such as "Trancers".  For a list of these pre-Full Moon productions, see Empire Pictures filmography.

Magha Puja: Māgha Pūjā (Burmese: တပို့တွဲလပြည့်နေ့ ; Khmer: មាឃបូជា , ; Lao: ມະຄະບູຊາ ; Thai: มาฆบูชา ; Sinhalese: නවම් පොහොය ) is an important Buddhist festival celebrated on the full moon day of Māgha in Cambodia, Laos, Nepal, Thailand and on the full moon day of Tabodwe in Myanmar.  The spiritual aims of the day are not to commit any kind of sins; do only good; purify one's mind.  Māgha Pūjā is a public holiday in Cambodia, Laos, Nepal, Myanmar and Thailand and is an occasion when Buddhists tend to go to the temple to perform merit-making activities.  In Sri Lanka this full moon day is called Navam Poya.  Although it is a public holiday in Sri Lanka, it is celebrated just as any full moon day is and there are no special festivals, unlike in Southeast Asia.

Jira Maligool: Jira Maligool (Thai: จิระ มะลิกุล ; rtgs: Chira Malikun ; born 1961) is a Thai film director, screenwriter and producer.  He has directed three films, "Mekhong Full Moon Party", "The Tin Mine" and "Seven Something" (part 42.195), and was the screenwriter behind the international hit, "The Iron Ladies".

Phaya Naga: The Phaya Naga (Thai: พญานาค ; ; literally: lord of nāga) are nāga, mythical serpent-like creatures, believed by locals to live in the Mekong river or estuaries.  Common explanations of their sightings have been attributed to oarfish, elongated fish with red crests; however, these are exclusively marine and usually live at great depths.  People in both Laos and Thailand attribute the naga fireballs phenomenon to these creatures.

Supporting paragraphs: Mekhong Full Moon Party Naga fireball
Answer: Naga fireball