About: http://webisa.webdatacommons.org/313207420

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 risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant for periods within the contractual life of the option and similar instruments.
http://www.w3.org/ns/prov#wasQuotedFrom	sec.gov