diff --git a/README.md b/README.md
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@@ -103,8 +103,28 @@ ax[1] = vis.radar(df, ax=ax[1], color='C1', alpha=0)
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+## 6. Command Line Interface
The CLI supports parsing chat logs into csv files.
As of now, you **can't** create visualizations from the CLI directly.
diff --git a/examples/nlp.svg b/examples/nlp.svg
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+ 2023-11-04T23:46:50.732974
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+ Matplotlib v3.7.1, https://matplotlib.org/
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+## 5. Natural Language Processing
-## 5. Command Line Interface
+### 5.1 Add Sentiment
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+```python
+from chatminer.nlp import add_sentiment
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+df_sentiment = add_sentiment(df)
+```
+### 5.2 Example Plot: Sentiment per Author in Groupchat
+
+```python
+df_grouped = df_sentiment.groupby(['author', 'sentiment']).size().unstack(fill_value=0)
+ax = df_grouped.plot(kind='bar', stacked=True, figsize=(8, 3))
+```
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