<synset id="n11131505" type="n">
<lex_filenum>18<lex_filenum/>
<word lex_id="0">Libby<word/>
<word lex_id="0">Willard Frank Libby<word/>
<pointer refs="n09913824">Instance Hypernym<pointer/>
<def>United States chemist who developed a method of radiocarbon dating (1908-1980)<def/>
<synset/>