火事の原因は不明です

Meaning
the cause of the fire is unknown

Vocab used in this sentence

火事
fire, fire broke out, blaze, conflagration
to, of
原因
cause, due, source, causing, reason, origin, culprit, causal
a, the, is, am, are, will
不明
unknown, unclear, strange, mysterious, uncertain, obscure, ambiguous, unfamiliar, unidentified, indistinct
です
is, be, are, am, that, away

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