PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • \ce sort of looks through its input token by token before it decides what is an atom, a subscript, a stoichiometric factor,??? also everything is typeset in mathmode (choosing \mathrm for atoms, I believe).
http://www.w3.org/ns/prov#wasQuotedFrom
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