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| Prefix | IRI |
|---|---|
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| dcterms | http://purl.org/dc/terms/ |
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| dbo | http://dbpedia.org/ontology/ |
| n24 | http://dbpedia.org/resource/File: |
| foaf | http://xmlns.com/foaf/0.1/ |
| n26 | https://web.archive.org/web/20160527061430/http:/www.ket.org/underground/research/ |
| n33 | https://web.archive.org/web/20050308114924/http:/kdl.kyvl.org/cgi/t/text/ |
| n16 | http://www.findagrave.com/cgi-bin/ |
| n18 | https://global.dbpedia.org/id/ |
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| n29 | https://web.archive.org/web/20090217062929/http:/undergroundrailroadindiana.com/ |
| n37 | http://www.cr.nps.gov/nr/travel/underground/ |
| n25 | http://www.ontologydesignpatterns.org/ont/dul/DUL.owl# |
| freebase | http://rdf.freebase.com/ns/ |
| n20 | http://docsouth.unc.edu/nc/coffin/ |
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| n17 | http://commons.wikimedia.org/wiki/Special:FilePath/ |
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| owl | http://www.w3.org/2002/07/owl# |
| n36 | https://web.archive.org/web/20140929032810/http:/www.cr.nps.gov/nr/travel/underground/ |
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| n19 | https://archive.org/details/ |
| dbc | http://dbpedia.org/resource/Category: |
| dbp | http://dbpedia.org/property/ |
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| xsdh | http://www.w3.org/2001/XMLSchema# |
| wikidata | http://www.wikidata.org/entity/ |
| gold | http://purl.org/linguistics/gold/ |
| dbr | http://dbpedia.org/resource/ |
