<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31370657</termId><termName>pentane</termName><termType>PT</termType><termNote><![CDATA[ Any of three types of isometric paraffin hydrocarbon found in petroleum and natural gas. ]]></termNote><termCreatedDate>2026-03-30 20:39:58</termCreatedDate><relation><relationType>BT</relationType><termId>31339968</termId><termName>liquefied petroleum gas</termName><termType>PT</termType></relation></term>  </Zthes>