<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31461137</termId><termName>oil wells</termName><termType>PT</termType><termNote><![CDATA[ Wells driven into rock from which petroleum is obtained. ]]></termNote><termCreatedDate>2026-03-30 21:04:06</termCreatedDate><relation><relationType>UF</relationType><termId>31461138</termId><termName>oil well</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31461139</termId><termName>wells, oil</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31443599</termId><termName>wells by function</termName><termType>PT</termType></relation></term>  </Zthes>