About: http://webisa.webdatacommons.org/97876466

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	Alternatively, the single layer may be silicon compounds, nitrogen compounds, boron compounds, or carbon compounds, each compound including a metal or an alloy selected from a group of W, Ti, Mo, Zr, V, Ta, Cr, Nb, and Hf.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com