About: http://webisa.webdatacommons.org/219956880

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	where dT is a time interval, step(t) is the step count at time t, and the EST subscript denotes an estimate.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com