bpo-35054: Add more index entries for symbols. (GH-10064)

diff --git a/Doc/reference/executionmodel.rst b/Doc/reference/executionmodel.rst
index d08abdf..5c83181 100644
--- a/Doc/reference/executionmodel.rst
+++ b/Doc/reference/executionmodel.rst
@@ -52,7 +52,7 @@
 
 :dfn:`Names` refer to objects.  Names are introduced by name binding operations.
 
-.. index:: statement: from
+.. index:: single: from; import statement
 
 The following constructs bind names: formal parameters to functions,
 :keyword:`import` statements, class and function definitions (these bind the