About: http://webisa.webdatacommons.org/263450158

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	According to the ???fth paragraph of the passage, enamel is the hardest animal tissue (animal tissue, by nature, is a living thing, and thus organic), ameloblasts help form it, and it has a pris- matic structure (choices a, b, d, and e).
http://www.w3.org/ns/prov#wasQuotedFrom	slideshare.net