<http://webisa.webdatacommons.org/50183406>	<http://www.w3.org/ns/prov#value>	"structures such as fountains and pools, presents a considerable challenge" .
<http://webisa.webdatacommons.org/prov/185293935>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/50183406> .
<http://webisa.webdatacommons.org/50183406>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<faqs.org> .
<http://webisa.webdatacommons.org/50183406>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/289577787>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/50183406> .