About: http://webisa.webdatacommons.org/256030771

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	require the input of highly subjective assumptions, including the option??s expected life and the price volatility of the underlying stock.
http://www.w3.org/ns/prov#wasQuotedFrom	marketplace.org