<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31417483</termId><termName>big tops</termName><termType>PT</termType><termNote><![CDATA[ Big tops, or circus tents, were first introduced ca. 1825 by the American itinerant company of J. Purdy Brown. This innovation soon became a standard of circus performances worldwide. Where a circus is made up of multiple tents, the big top is the main tent. ]]></termNote><termCreatedDate>2026-03-30 20:52:21</termCreatedDate><relation><relationType>UF</relationType><termId>31417484</termId><termName>big top</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31417485</termId><termName>circus tent</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31417486</termId><termName>circus tents</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31381355</termId><termName>performing arts buildings</termName><termType>PT</termType></relation></term>  </Zthes>