About: http://webisa.webdatacommons.org/191475855

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	Of course, PowerPoint is the most popular tool, but there are several web-based alternatives that free a teacher from having to bring a USB flash drive to the classroom or conference center.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com