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<http://webisa.webdatacommons.org/prov/356187490>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/334763845> .
<http://webisa.webdatacommons.org/334763845>	<http://www.w3.org/ns/prov#value>	"At Castle Lake, California, for example, 1969 was a year of unusually low productivity (Goldman et al. 1989b)." .
<http://webisa.webdatacommons.org/334763845>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<craterlakeinstitute.com> .