<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31320502</termId><termName>arsenic</termName><termType>PT</termType><termNote><![CDATA[ A grayish-white element with symbol As and atomic number 33, having a metallic luster, vaporizing when heated, and forming poisonous compounds.  ]]></termNote><termCreatedDate>2026-03-30 20:26:23</termCreatedDate><relation><relationType>UF</relationType><termId>31320503</termId><termName>As</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31306143</termId><termName>inorganic material</termName><termType>PT</termType></relation><relation><relationType>BT</relationType><termId>31319740</termId><termName>elements</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31344651</termId><termName>arsenopyrite</termName><termType>PT</termType></relation></term>  </Zthes>