<?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">spheres</topic></authority><related type="other"><topic>balls</topic></related><related type="other"><topic>spherical</topic></related><related type="broader"><topic>solids</topic></related><variant type="other"><topic>sphere</topic></variant> <note xml:lang="en"><![CDATA[ A geometrical figure comprising the set of all points in three-dimensional space lying the same distance (the radius) from a given point (the center), or the result of rotating a circle about one of its diameters. ]]></note></mads>