<http://webisa.webdatacommons.org/217569298>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/217569298>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<tropicalfishkeeping.com> .
<http://webisa.webdatacommons.org/prov/365857414>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/217569298> .
<http://webisa.webdatacommons.org/prov/366875893>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/217569298> .
<http://webisa.webdatacommons.org/217569298>	<http://www.w3.org/ns/prov#value>	"As I mentioned, there is a lot of biological activity occurring in the substrate, and some plants, especially swords and crypts, have extensive root systems." .