About: http://webisa.webdatacommons.org/215801164

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 on the date of grant for the respective expected life of the option.
http://www.w3.org/ns/prov#wasQuotedFrom	shareholder.com