What? Nani? 

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What is this? Kore wa nan desu ka? 
 kore: this
Kanji translation: nan: what

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What is that? Are wa nan desu ka? 
 are: that nan: what
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What does this mean? Kore wa dou iu imi desu ka? 
 kore: this
Kanji translation: imi: meaning

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What does that mean? Are wa dou iu imi desu ka? 
 are: that imi: meaning
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What is this like? Kore wa don-na mono desu ka? 
 kore: this
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What is that building? Ano tatemono wa nan desu ka? 
 ano: that nan: what
Kanji translation: tatemono: building

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What is this used for? Kore wa nani ni tsukau no desu ka? 
 kore: this nani: what
Kanji translation: tsukau: use

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