diff --git a/ns/rdf-xsd.ttl b/ns/rdf-xsd.ttl
index c19676f..5a0460c 100644
--- a/ns/rdf-xsd.ttl
+++ b/ns/rdf-xsd.ttl
@@ -226,3 +226,74 @@ xsd:NCName a rdfs:Datatype ;
   rdfs:label "NCName" ;
   rdfs:comment "XML 'non-colonized' names matching the NCName production (i.e., Name without the colon). Derived from xsd:Name. Lexical form: XML NCName (same as Name but disallowing ':')." .
 
+# Facets
+xsd:length a rdf:Property ;
+    rdfs:isDefinedBy <https://www.w3.org/TR/xmlschema11-2/#rf-length> ;
+    rdfs:label "length" ;
+    rdfs:comment "Exact length of the value; units depend on the base type (characters for string/anyURI, octets for binary, items for list types)." .
+
+xsd:minLength a rdf:Property ;
+    rdfs:isDefinedBy <https://www.w3.org/TR/xmlschema11-2/#rf-minLength> ;
+    rdfs:label "min length" ;
+    rdfs:comment "Minimum length of the value; measured in characters (string/anyURI), octets (binary), or list items for list types." .
+
+xsd:maxLength a rdf:Property ;
+    rdfs:isDefinedBy <https://www.w3.org/TR/xmlschema11-2/#rf-maxLength> ;
+    rdfs:label "max length" ;
+    rdfs:comment "Maximum length of the value; measured in characters (string/anyURI), octets (binary), or list items for list types." .
+
+xsd:pattern a rdf:Property ;
+    rdfs:isDefinedBy <https://www.w3.org/TR/xmlschema11-2/#rf-pattern> ;
+    rdfs:label "pattern" ;
+    rdfs:comment "Constrains the lexical space by requiring each literal to match the supplied regular expression(s)." .
+
+xsd:enumeration a rdf:Property ;
+    rdfs:isDefinedBy <https://www.w3.org/TR/xmlschema11-2/#rf-enumeration> ;
+    rdfs:label "enumeration" ;
+    rdfs:comment "Restricts the value space to a specified set of values (no ordering implied by the facet itself)." .
+
+xsd:whiteSpace a rdf:Property ;
+    rdfs:isDefinedBy <https://www.w3.org/TR/xmlschema11-2/#rf-whiteSpace> ;
+    rdfs:label "white space" ;
+    rdfs:comment "Controls whitespace normalization during validation (preserve, replace, collapse), which can indirectly affect lexical forms." .
+
+xsd:maxInclusive a rdf:Property ;
+    rdfs:isDefinedBy <https://www.w3.org/TR/xmlschema11-2/#rf-maxInclusive> ;
+    rdfs:label "max inclusive" ;
+    rdfs:comment "Inclusive upper bound of the value space for ordered datatypes." .
+
+xsd:maxExclusive a rdf:Property ;
+    rdfs:isDefinedBy <https://www.w3.org/TR/xmlschema11-2/#rf-maxExclusive> ;
+    rdfs:label "max exclusive" ;
+    rdfs:comment "Exclusive upper bound of the value space for ordered datatypes." .
+
+xsd:minExclusive a rdf:Property ;
+    rdfs:isDefinedBy <https://www.w3.org/TR/xmlschema11-2/#rf-minExclusive> ;
+    rdfs:label "min exclusive" ;
+    rdfs:comment "Exclusive lower bound of the value space for ordered datatypes." .
+
+xsd:minInclusive a rdf:Property ;
+    rdfs:isDefinedBy <https://www.w3.org/TR/xmlschema11-2/#rf-minInclusive> ;
+    rdfs:label "min inclusive" ;
+    rdfs:comment "Inclusive lower bound of the value space for ordered datatypes." .
+
+xsd:totalDigits a rdf:Property ;
+    rdfs:isDefinedBy <https://www.w3.org/TR/xmlschema11-2/#rf-totalDigits> ;
+    rdfs:label "total digits" ;
+    rdfs:comment "Upper bound on the total number of decimal digits in a value (both before and after the decimal point)." .
+
+xsd:fractionDigits a rdf:Property ;
+    rdfs:isDefinedBy <https://www.w3.org/TR/xmlschema11-2/#rf-fractionDigits> ;
+    rdfs:label "fraction digits" ;
+    rdfs:comment "Upper bound on the number of digits allowed in the fractional part of a decimal value; must not exceed totalDigits." .
+
+xsd:assertions a rdf:Property ;
+    rdfs:isDefinedBy <https://www.w3.org/TR/xmlschema11-2/#rf-assertions> ;
+    rdfs:label "assertions" ;
+    rdfs:comment "Requires values to satisfy given XPath expressions; the facet value is a sequence of assertion components." .
+
+xsd:explicitTimezone a rdf:Property ;
+    rdfs:isDefinedBy <https://www.w3.org/TR/xmlschema11-2/#rf-explicitTimezone> ;
+    rdfs:label "explicit timezone" ;
+    rdfs:comment "Three-valued facet (required | prohibited | optional) controlling the presence of a time-zone offset for date/time datatypes." .
+