About: http://webisa.webdatacommons.org/345177032

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	It consists of a thimble 12 made of porous porcelain, papier mache or other material which will readily permit the hydrogen gas but not air to percolate.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au