I have the following table:
我有以下表格:
| Article-Material1 | Article-Material2 |
|-------------------|-------------------|
| article001 | article002 |
| article001 | article003 |
| article001 | material001 |
| material001 | |
| article002 | article004 |
| article002 | material002 |
| material002 | |
| article003 | material003 |
| material003 | |
| article004 | material004 |
| material004 | |
| article005 | article010 |
| article005 | article011 |
| article005 | material001 |
| article010 | material005 |
| material005 | |
| article011 | article012 |
| article011 | material004 |
| article011 | material006 |
| material006 | |
| article012 | material002 |
| article012 | material007 |
| material007 | |
| Artic
