OptionaldataType: stringa string representing the datatype. Can be of type
Optionaldirectionthe base direction, mainly for directional language enabled strings like RDF_DIR_LANG_STRING
Optionallanguagethe language, mainly for language enabled strings like RDF_LANG_STRING
Optionalstrthe string value of this literal. In other words, the string representing the RDF.literal value.
internal representation of this literal's value
Should be type that implements XSD_STRING