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Mathematics
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Not Known
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English
Russian
it is
not known
with certainty
точно не известен
the answer to this question is
not known
with certainty
на этот вопрос нельзя дать определённый ответ
the domains are
not known
ahead of time
области предварительно неизвестны
the domains are
not known
ahead of time
области заранее неизвестны
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