Table for the 4 triples in graph http://liddi.stanford.edu/LIDDI_resource:1821_nanopubhead

Subject	Predicate	Object
ddir:LIDDI_resource:1821_nanopub	nanopub:hasAssertion	ddir:LIDDI_resource:1821_nanopubassertion
ddir:LIDDI_resource:1821_nanopub	nanopub:hasProvenance	ddir:LIDDI_resource:1821_nanopubprovenance
ddir:LIDDI_resource:1821_nanopub	nanopub:hasPublicationInfo	ddir:LIDDI_resource:1821_nanopubpublicationInfo
ddir:LIDDI_resource:1821_nanopub	rdf:type	nanopub:Nanopublication