About: http://webisa.webdatacommons.org/293481256

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	In the formulas (1-a) and (1-b), examples of the alkali metal (M1) may include metals in Group 1 of the periodic table, such as lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs) and francium (Fr).
http://www.w3.org/ns/prov#wasQuotedFrom	google.com