<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">tides</topic></authority><related type="narrower"><topic>tidal waves</topic></related><related type="other"><topic>tide tables</topic></related><related type="broader"><topic>earth sciences concepts</topic></related><variant type="other"><topic>tide</topic></variant> <note xml:lang="en"><![CDATA[ The periodic variations in the surface level of the oceans and its associated bodies of water, caused by gravitational attraction of the moon and sun. ]]></note></mads>