Blue Mountain Relationships in RDF experiments

review.dot

// Command: dot -Tpng -o review.png review.dot
digraph G {
    pad=".5";
    label="\n\nReview / Work / Magazine Relationship Graph";
    labelloc=bottom;
    labeljust=left;
    rankdir=LR
    size="9"; // inches for the long side
    fontpath="/usr/share/fonts";
    graph [fontname="Monospace"];
    node [fontname="Monospace"];
    edge [fontname="Monospace"];
 
    review [label="Hymen (review)\nAuthor: Marianne Moore", color=orange]
    magazine [label="Broom 1923", color=green]
    work [label="Hymen\nAuthor: Hilda Doolittle", color=blue]
 
    review -> work  [label="reviewOf"]
    work -> review  [label="reviews"]
    review -> magazine [label="isPartOf"]
    magazine -> review [label="hasPart"]
 
}

review.rb

require 'linkeddata'

uris = {
  bmtn: RDF::URI.new('http://bluemountain.org/orwhatever/'),
  xsd: RDF::URI.new("http://www.w3.org/2001/XMLSchema#"),
  rda: RDF::URI.new("http://rdvocab.info/RDARelationshipsWEMI/"),
  naf: RDF::URI.new("http://id.loc.gov/authorities/names/"),
  schema: RDF::URI.new("http://schema.org/"),
  oclcschema: RDF::URI.new("http://purl.org/library/") # see http://experimental.worldcat.org/ontology/library.owl
}

prefixes = {
  dc: RDF::DC.to_s,
  bmtn: uris[:bmtn],
  xsd: uris[:xsd],
  rda: uris[:rda],
  naf: uris[:naf],
  schema: uris[:schema],
  oclcschema: uris[:oclcschema]

}

g = RDF::Graph.new

magazine = RDF::URI.new(uris[:bmtn].join('broom'))
magazine_type = uris[:oclcschema].join("Periodical")
g << [magazine, RDF.type, magazine_type]
g << [magazine, RDF::DC.title, RDF::Literal.new("Broom", language: "en")]
g << [magazine, RDF::DC.issued, RDF::Literal.new(1923, datatype: RDF::XSD.gYear)]

poetry_book = RDF::URI.new(uris[:bmtn].join('doolittle-hymen'))
book_type = uris[:schema].join("Book")
doolittle = uris[:naf].join("n78095822")
g << [poetry_book, RDF.type, book_type]
g << [poetry_book, RDF::DC.title, RDF::Literal.new("Hymen", language: "en")]
g << [poetry_book, RDF::DC.creator, doolittle]

review = RDF::URI.new(uris[:bmtn].join('moore-hymen'))
review_type = uris[:schema].join("Review")
moore = uris[:naf].join("n50016866")
reviewOf_rel = uris[:rda].join('reviewOf')
g << [review, RDF.type, review_type]
g << [review, RDF::DC.isPartOf, magazine]
g << [review, RDF::DC.title, RDF::Literal.new("Hymen", language: "en")]
g << [review, RDF::DC.creator, moore]
g << [review, reviewOf_rel, poetry_book]

puts g.dump(:ttl, prefixes: prefixes)