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Samba is a Brazilian rhythm, isn't it?
Literal
Samba [topic-は] Brazil [genitive-の] rhythm [copula-ですね].
A simple factual statement with the tag-question ね inviting agreement. サンバ ('samba') and リズム ('rhythm') are both loanwords. ブラジル is the katakana for 'Brazil.' ですね makes it a shared-knowledge confirmation rather than a lecture. Short, conversational, and culturally informative.