```
+------------------------------------------+
|                                          |
|          Document Processing Flow        |
|                                          |
+------------------------------------------+
                    |
                    v
+------------------------------------------+
|                                          |
|  +----------+    +-----------------+     |
|  | Document |    | Microsoft Graph |     |
|  | Upload   |--->| Integration     |     |
|  +----------+    +-----------------+     |
|        ^                  |              |
|        |                  v              |
|  +----------+    +-----------------+     |
|  | Local    |    | Document        |     |
|  | Storage  |--->| Parser          |     |
|  +----------+    +-----------------+     |
|                          |               |
|                          v               |
|                  +-----------------+     |
|                  | Text Extraction |     |
|                  +-----------------+     |
|                          |               |
|                          v               |
|                  +-----------------+     |
|                  | Semantic        |     |
|                  | Chunking        |     |
|                  +-----------------+     |
|                          |               |
|                          v               |
|                  +-----------------+     |
|                  | Metadata        |     |
|                  | Extraction      |     |
|                  +-----------------+     |
|                          |               |
|                          v               |
|                  +-----------------+     |
|                  | Vector          |     |
|                  | Embedding       |     |
|                  +-----------------+     |
|                          |               |
+------------------------------------------+
                    |
                    v
+------------------------------------------+
|                                          |
|          Knowledge Graph Engine          |
|                                          |
+------------------------------------------+
```