About: http://webisa.webdatacommons.org/352100419

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	Some vaccines such as Td (tetanus and diphtheria vaccine), which is indicated for older children (???7 years of age) and adults, are also now available in formulations that are free of thimerosal or contain only trace amounts.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com