About: http://webisa.webdatacommons.org/104054597

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	PowerPoint Skill 3.14 Changing the Size of a Placeholder A placeholder is a container on a slide that holds text or other content, such as a table, chart, or image.
http://www.w3.org/ns/prov#wasQuotedFrom	slideshare.net