what language did the third community spoke?
Kawaiisu language.
Kawaiisu
The Kawaiisu language, or Tehachapi, is a member of the Southern Numic division of the Uto-Aztecan language family. The Kawaiisu homeland was bordered by speakers of non-Numic Uto-Aztecan languages. 
what is manzanar? It is the site of one of ten American concentration camps. who were the residents? Japanese Americans. which war led them to the camp? World War II. how long they had to be there? From March 1942 to November 1945. where was the camp set? It is located at the foot of the Sierra Nevada mountains. who were the inhabitants? Martis people and indigenous people. who were the latter's descendants? UNANSWERABLE are the latter belong to tribal community? Yes, they were the Northern Paiute tribes on the east side, with the Mono tribe and Sierra Miwok tribe on the western side, and the Kawaiisu and Tübatulabal tribes in the southern Sierra.
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Kawaiisu [SEP] Language
The Kawaiisu language, or Tehachapi, is a member of the Southern Numic division of the Uto-Aztecan language family. The Kawaiisu homeland was bordered by speakers of non-Numic Uto-Aztecan languages. The Kitanemuk to the south spoke Takic, the Tübatulabal to the north spoke the Tübatulabal language a linguistic isolate. The Yokuts ("Monilabal") to the west were non-Uto-Aztecan. Because they also spoke a Southern Numic language, the Chemehuevi to the east are the closest linguistic relatives to Kawaiisu. The Kawaiisu have been known by several other names, including the "Caliente, Paiute, Tehachapi Valley Indians," and "Tehachapi Indians", but they called themselves depending on dialect Nuwu, New-wa, Nu-oo-ah or Niwiwi, meaning "The People." The tribal designations as "Kawaiisu" or "Tehachapi Indians" are both English adoptions of the Yokutsan words used by the neighboring Yokuts.