<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31410854</termId><termName>[sulfides by general type]</termName><termType>PT</termType><termCreatedDate>2026-03-30 20:50:28</termCreatedDate><relation><relationType>BT</relationType><termId>31373700</termId><termName>sulfide</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31436673</termId><termName>organic sulfide</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31436676</termId><termName>inorganic sulfide</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31436679</termId><termName>phosphine sulfide</termName><termType>PT</termType></relation></term>  </Zthes>