About: http://webisa.webdatacommons.org/310504038

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	The tunnels lie at an average depth below the bed of the Hudson River of 25 feet, although the deepest point in them is 101 feet below the surface of the water.
http://www.w3.org/ns/prov#wasQuotedFrom	nycsubway.org