const RDF  = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#',
    XSD  = 'http://www.w3.org/2001/XMLSchema#',
    SWAP = 'http://www.w3.org/2000/10/swap/';

export default {
  xsd: {
    decimal: `${XSD}decimal`,
    boolean: `${XSD}boolean`,
    double:  `${XSD}double`,
    integer: `${XSD}integer`,
    string:  `${XSD}string`,
  },
  rdf: {
    type:       `${RDF}type`,
    nil:        `${RDF}nil`,
    first:      `${RDF}first`,
    rest:       `${RDF}rest`,
    langString: `${RDF}langString`,
  },
  owl: {
    sameAs: 'http://www.w3.org/2002/07/owl#sameAs',
  },
  r: {
    forSome: `${SWAP}reify#forSome`,
    forAll:  `${SWAP}reify#forAll`,
  },
  log: {
    implies: `${SWAP}log#implies`,
  },
};