@prefix rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#>.
@prefix o2:  <http://www.w3.org/2007/ont/o2#>.   # Just for 'chain' missing from owl

@prefix cc:     <http://creativecommons.org/ns#>.
@prefix dc:	<http://purl.org/dc/elements/1.1/>.
@prefix doc:	<http://www.w3.org/2000/10/swap/pim/doc#> .
@prefix ldif:	<http://www.w3.org/2007/ont/ldif#> .
@prefix :	<http://www.w3.org/2007/ont/currency#> .
@prefix cur:	<http://www.w3.org/2007/ont/currency#> . # Hint

@keywords a, is, of.

<>  doc:version "$Id: currency.n3,v 1.2 2010/12/22 13:50:58 timbl Exp $";
    dc:title "An Ontology for Currencies";
    doc:creator <http://www.w3.org/People/Berners-Lee/card#i>;
    cc:licence <http://www.w3.org/2000/10/swap/LICENSE.n3>;
    rdfs:comment """Currency.
    A naive view for deriving a common value of assets in differet currencies
    """.

Currency a rdfs:Class;
    rdfs:label "currency";
    rdfs:comment """An abstract currency""".


code a rdf:Property;
    rdfs:label "code";
    rdfs:domain Currency; 
    rdfs:comment "The three letter currency, eg: 'USD'.".

sign a rdf:Property;
    rdfs:label "sign";
    rdfs:domain Currency; 
    rdfs:comment "The symbol, eg: '$'.".

in_USD a rdf:Property;
    rdfs:label "value in USD";
    rdfs:domain Currency; 
    rdfs:comment """Notional value of 1 of the currency in USD, eg: 1.0.
    This is a naive model in that it is dollar-centric,
    does not distinsuish beetween buy and sell rates.""".


# These are examples. A definitive list could have to be pulled
# from the web somewhere in real time.
# For example http://dbpedia.org/ontology/Currency mentioned over 600 currecies in 2010.
 
 USD rdfs:label "USD"; dc:title "US Dollars"; code "USD"; sign "$"; in_USD 1.0.
# GBP rdfs:label "GBP"; dc:title "GB Pounds"; code "GBP"; sign "£".
# EUR rdfs:label "EUR"; dc:title "Euros"; code "EUR"; sign "€".

# ends