Update CHANGELOG and doc

Author: stellasia

CHANGELOG.md

@@ -6,6 +6,11 @@
 
 - Fixed a bug where `spacy` and `rapidfuzz` needed to be installed even if not using the relevant entity resolvers.
 
+### Changed
+
+- Strict mode in `SimpleKGPipeline`: now properties and relationships are pruned only if they are defined in the input schema.
+
+
 ## 1.7.0
 
 ### Added

docs/source/user_guide_kg_builder.rst

@@ -850,6 +850,13 @@ Any relation whose start node or end node does not conform to the provided tuple
 If a relation start/end nodes are valid but the direction is incorrect, the latter will be inverted.
 If a node is left with no properties, it will be also pruned.
 
+.. note::
+
+    If the input schema lacks a certain type of information, pruning is skipped.
+    For example, if an entity is defined only by a label and has no properties,
+    property pruning is not performed and all properties returned by the LLM are kept.
+
+
 .. warning::
 
     Note that if the schema enforcement mode is on but the schema is not provided, no schema enforcement will be applied.