PS re the parent of the ID=7 it was 2: show the details here is below.
+----+----------------------------------------------+----------------------------------------------+-------------+-------------+
| ID | post_title | post_name | post_parent | post_status |
+----+----------------------------------------------+----------------------------------------------+-------------+-------------+
| 2 | Sample Page | sample-page | 0 | trash |
| 7 | Sample Page | 2-revision-v1 | 2 | inherit |
