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Predicate rdf_portray_as/1
 rdf_portray_as(+Style) is det[private]
Set the style used to portray resources. Style is one of:
prefix:id
Write as NS:ID, compatible with what can be handed to the rdf predicates. This is the default.
writeq
Use quoted write of the full resource.
prefix:label
Write namespace followed by the label. This format cannot be handed to rdf/3 and friends, but can be useful if resource-names are meaningless identifiers.
prefix:id=label
This combines prefix:id with prefix:label, providing both human readable output and output that can be pasted into the commandline.