About: http://webisa.webdatacommons.org/73599005

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	As vessels with deeper drafts became more common on the Great Lakes, shoals in the South Channel started to pose a significant threat, especially during storms.
http://www.w3.org/ns/prov#wasQuotedFrom	lighthousefriends.com