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Q: The languages discussed here are what are usually called the Indo- European family; similar family trees could be drawn for the Semitic languages, Sino- Tibetan, Japanese, Bantu, Malayo- Polynesian, and so on.
A:
The languages here are usually called Indo-European family; similar family trees: the Semitic languages, Sino-Tibetan, Japanese, Bantu, Malayo-Polynesian.