Faulty prefixes on Turtle examples

Turtle Recommendation states that “A prefixed name is turned into an IRI by concatenating the IRI associated with the prefix and the local part.”

As such, the predicates of EXAMPLE 12 <https://www.w3.org/TR/2014/REC-turtle-20140225/> would be http://example.org/elementsatomicNumber, http://example.org/elementsatomicMass, and http://example.org/elementsspecificGravity. The same issue goes for example 13 and 18.