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In a sentence
UI neexistuje.
AI doesn't exist.
Tom neexistuje.
Tom doesn't exist.
Umelá inteligencia neexistuje.
There's no such thing as Artificial Intelligence.
Keby Boh neexistoval, museli by sme si ho vymyslieť.
If God did not exist, we'd have to invent him.
Examples from Tatoeba (CC BY 2.0 FR).
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Includes Tatoeba example sentences when present.
Full attribution on References.