Take this dialogue for example, where A and B talk about a certain 田中さん:

A: ところで田中さんって覚えてる？  
B: あ、このあいだパーティーにいた？

I made it up, so please excuse any unnatural aspects. The important part is
B's answer. Rather than "Ah, he/she was at the party the other day?", it feels
more like "Ah, the one who was at the party the other day?", like there is a 人
or やつ at the end of the sentence that was omitted.

Although I think I've seen this pattern quite a few times, I don't remember
having seen any discussion about it. If it exists (and I'm not imagining
things), does it have a name and is there anything notable about it?
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2022-10-10T23:47:27.753
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2022-10-10T23:47:27.753
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question
relative-clauses ellipsis omission
Phenomenon of omitting the head noun of a relative clause