<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31471998</termId><termName>trap doors</termName><termType>PT</termType><termNote><![CDATA[ Doors fitted to an opening in a horizontal or nearly horizontal surface, as a floor or roof, through which a person ascends head first and descends feet first. ]]></termNote><termCreatedDate>2026-03-30 21:07:02</termCreatedDate><relation><relationType>UF</relationType><termId>31471999</termId><termName>doors, trap</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31472000</termId><termName>trap door</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31472001</termId><termName>trapdoors</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31458348</termId><termName>doors by form</termName><termType>PT</termType></relation></term>  </Zthes>