diff --git a/lib/rdf/graph.ex b/lib/rdf/graph.ex
index 89cd597..0de34e8 100644
--- a/lib/rdf/graph.ex
+++ b/lib/rdf/graph.ex
@@ -264,7 +264,7 @@ defmodule RDF.Graph do
   options. They have different addition semantics similar to the `add_annotations/3`,
   `put_annotations/3` and `put_annotation_properties/3` counterparts.
 
-  What should happen with the annotations of statement which got delete during the
+  What should happen with the annotations of statements which got deleted during the
   overwrite, can be controlled with these keyword options:
 
   - `:delete_annotations_on_deleted`: deletes all or some annotations of the deleted
@@ -322,7 +322,7 @@ defmodule RDF.Graph do
   options. They have different addition semantics similar to the `add_annotations/3`,
   `put_annotations/3` and `put_annotation_properties/3` counterparts.
 
-  What should happen with the annotations of statement which got delete during the
+  What should happen with the annotations of statements which got deleted during the
   overwrite, can be controlled with these keyword options:
 
   - `:delete_annotations_on_deleted`: deletes all or some annotations of the deleted
@@ -382,7 +382,7 @@ defmodule RDF.Graph do
   use `RDF.Data.delete/2`.
 
   The optional `:delete_annotations` keyword option allows to set which of
-  RDF-star annotations of the deleted statements should be deleted.
+  the RDF-star annotations of the deleted statements should be deleted.
   Any of the possible values of `delete_annotations/3` can be provided here.
   By default no annotations of the deleted statements will be removed.
   Alternatively, the `:add_annotations`, `:put_annotations` or `:put_annotation_properties`
@@ -449,7 +449,7 @@ defmodule RDF.Graph do
   If `subjects` contains subjects that are not in `graph`, they're simply ignored.
 
   The optional `:delete_annotations` keyword option allows to set which of
-  RDF-star annotations of the deleted statements should be deleted.
+  the RDF-star annotations of the deleted statements should be deleted.
   Any of the possible values of `delete_annotations/3` can be provided here.
   By default no annotations of the deleted statements will be removed.
   Alternatively, the `:add_annotations`, `:put_annotations` or `:put_annotation_properties`
diff --git a/lib/rdf/star/statement.ex b/lib/rdf/star/statement.ex
index e1102cc..b326abf 100644
--- a/lib/rdf/star/statement.ex
+++ b/lib/rdf/star/statement.ex
@@ -28,7 +28,7 @@ defmodule RDF.Star.Statement do
   @doc """
   Creates a `RDF.Star.Triple` or `RDF.Star.Quad` with proper RDF values.
 
-  An error is raised when the given elements are not coercible to RDF values.
+  An error is raised when the given elements are not coercible to RDF-star values.
 
   Note: The `RDF.statement` function is a shortcut to this function.
 
@@ -53,7 +53,7 @@ defmodule RDF.Star.Statement do
   @doc """
   Creates a `RDF.Star.Statement` tuple with proper RDF values.
 
-  An error is raised when the given elements are not coercible to RDF values.
+  An error is raised when the given elements are not coercible to RDF-star values.
 
   ## Examples
 
@@ -120,9 +120,9 @@ defmodule RDF.Star.Statement do
   def valid_graph_name?(any), do: RDF.Statement.valid_graph_name?(any)
 
   @doc """
-  Checks if the given tuple is a RDF-star statement annotating a triple on subject or object position.
+  Checks if the given tuple is a RDF-star statement with a quoted triple on subject or object position.
 
-  Note: This function won't check if the given tuple or the annotated triple is valid.
+  Note: This function won't check if the given tuple or the quoted triple is valid.
   Use `valid?/1` for this purpose.
 
   ## Examples