About: http://webisa.webdatacommons.org/398334348

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	For example, Hydrogen and other elements in Group 1 all had one dot at the bottom; Magnesium, Calcium, et al. had two; Aluminum three; and so forth.
http://www.w3.org/ns/prov#wasQuotedFrom	whatitslikeontheinside.com