<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31325867</termId><termName>swim fins</termName><termType>PT</termType><termNote><![CDATA[ Triangular, flexible appendages built to improve underwater movement, worn on the feet and sometimes also attached to the ankles with a single loop. Usually made of rubber. Commercial swim fins were first patented by Owen Churchill (1896-1985) in the 1930s. ]]></termNote><termCreatedDate>2026-03-30 20:27:49</termCreatedDate><relation><relationType>UF</relationType><termId>31325868</termId><termName>fins, swim</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31325869</termId><termName>swim fin</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31307798</termId><termName>temporary alphabetical list: recreational artifacts</termName><termType>PT</termType></relation></term>  </Zthes>