Individual Public Domain Declaration (organizational declaration to follow)

# Copyright waiver for <http://github.com/ruby-rdf/rdf>
# Copyright waiver for <http://github.com/ruby-rdf/rdf-aggregate-repo>
# Copyright waiver for <http://github.com/ruby-rdf/rdf-do>
# Copyright waiver for <http://github.com/ruby-rdf/rdf-isomorphic>
# Copyright waiver for <http://github.com/ruby-rdf/rdf-json>
# Copyright waiver for <http://github.com/ruby-rdf/rdf-microdata>
# Copyright waiver for <http://github.com/ruby-rdf/rdf-mongo>
# Copyright waiver for <http://github.com/ruby-rdf/rdf-n3>
# Copyright waiver for <http://github.com/ruby-rdf/rdf-rdfa>
# Copyright waiver for <http://github.com/ruby-rdf/rdf-rdfxml>
# Copyright waiver for <http://github.com/ruby-rdf/rdf-reasoner>
# Copyright waiver for <http://github.com/ruby-rdf/rdf-spec>
# Copyright waiver for <http://github.com/ruby-rdf/rdf-tabular>
# Copyright waiver for <http://github.com/ruby-rdf/rdf-trig>
# Copyright waiver for <http://github.com/ruby-rdf/rdf-trix>
# Copyright waiver for <http://github.com/ruby-rdf/rdf-turtle>
# Copyright waiver for <http://github.com/ruby-rdf/rdf-vocab>
# Copyright waiver for <http://github.com/ruby-rdf/rdf-xsd>
# Copyright waiver for <http://github.com/ruby-rdf/json-ld>
# Copyright waiver for <http://github.com/ruby-rdf/linkeddata>
# Copyright waiver for <http://github.com/ruby-rdf/rack-linkeddata>
# Copyright waiver for <http://github.com/ruby-rdf/sinatra-linkeddata>
# Copyright waiver for <http://github.com/ruby-rdf/sparql>
# Copyright waiver for <http://github.com/ruby-rdf/sparql-client>

I dedicate any and all copyright interest in this software to the
public domain. I make this dedication for the benefit of the public at
large and to the detriment of my heirs and successors. I intend this
dedication to be an overt act of relinquishment in perpetuity of all
present and future rights to this software under copyright law.

To the best of my knowledge and belief, my contributions are either
originally authored by me or are derived from prior works which I have
verified are also in the public domain and are not subject to claims
of copyright by other parties.

Some of my contributions may be submitted on behalf of my employer,
the Digital Public Library of America. Such contributions are submitted
in accordance with employee software licensing policies and covered
under a similar declaration from that organization.

To the best of my knowledge and belief, no other individual, business,
organization, government or other entity has any copyright interest in
my contributions. I affirm that I will not make contributions that are
otherwise encumbered.

This declaration applies to the above listed source repositories, as
well as all contributions including, but not limited to, software and
documentation, submitted to any projects associated with the
`ruby-rdf` GitHub "organization" through its various repositories, this
mailing list, or other channels.

- Tom Johnson