Please Help, with Query and correct nesting

Questions & Help Queries
2

Here is one way:

#+BEGIN_QUERY
{
 :query [:find (pull ?b [*])
   :where
     [?key :block/original-name "Key Projects"]
     [?b :block/path-refs ?key]
     (not [?b :block/refs ?key])
 ]
 :remove-block-children? false
}
#+END_QUERY