n11136622
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<synset id="n11136622" type="n"> <lex_filenum>18<lex_filenum/> <word lex_id="0">Lobachevsky<word/> <word lex_id="0">Nikolai Ivanovich Lobachevsky<word/> <pointer refs="n10301261">Instance Hypernym<pointer/> <def>Russian mathematician who independently discovered non-Euclidean geometry (1792-1856)<def/> <synset/>