@prefix : <http://example.org/ns#> .
@prefix xsd:        <http://www.w3.org/2001/XMLSchema#> .
@prefix rdf:        <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .

:x :p1 "true"^^xsd:boolean .
:x :p2 "false"^^xsd:boolean .

:x rdf:type :C .

:x :n1  "123.0"^^xsd:decimal .
:x :n2  "456."^^xsd:decimal .

:x :n3 "+5"^^xsd:integer .
:x :n4 "-18"^^xsd:integer .