About: http://webisa.webdatacommons.org/283537570

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	There have been no material changes to our Contractual Obligations and Commercial Commitments table presented for the year ended December 31, 2011 other than the commitments described below.
http://www.w3.org/ns/prov#wasQuotedFrom	sec.gov