About: http://webisa.webdatacommons.org/405271219

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	They form shells like atoms in the periodic table (notice the symmetry), and they may freeze, i.e. crystallize like in this figure.
http://www.w3.org/ns/prov#wasQuotedFrom	aps.org