<synset id="n09459812" type="n">
<lex_filenum>17<lex_filenum/>
<word lex_id="0">top quark<word/>
<word lex_id="0">truth quark<word/>
<pointer refs="n09401834">Hypernym<pointer/>
<def>a hypothetical quark with a charge of +2/3 and a mass more than 100,000 times that of an electron<def/>
<synset/>