About: http://webisa.webdatacommons.org/403614423

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Not only domes and vaults but also walls were frequently formed of this concrete, and they were faced with brick, stone, alabaster, porphyry and other marbles, hewn from countless quarries by armies of slaves.
http://www.w3.org/ns/prov#wasQuotedFrom	oldandsold.com