About: http://webisa.webdatacommons.org/298671819

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	We at length squeezed our way for about thirty feet, and found that the aperture was a low and regularly formed arch, having a bottom of the same impalpable powder as that in the main chasm.
http://www.w3.org/ns/prov#wasQuotedFrom	virginia.edu