<?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">pietraforte</topic></authority><related type="broader"><topic>calcareous sandstone</topic></related><variant type="other"><topic>pietra forte</topic></variant> <note xml:lang="en"><![CDATA[ A honey-brown calcareous sandstone quarried in Fiesole and other locations in the vicinity of Florence, where it is used as a building stone. The Ponte Vecchio, Pitti Palace, and Palazzo Vecchio are all pietraforte constructions.  ]]></note></mads>