diff --git a/examples/sentimental-analysis/README.md b/examples/sentimental-analysis/README.md
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+# Sentiment Analysis with Timeplus Proton
diff --git a/examples/sentimental-analysis/sentiment_analysis.sql b/examples/sentimental-analysis/sentiment_analysis.sql
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+SELECT 
+    text,
+    CASE
+        WHEN sentiment_score > 0 THEN 'positive'
+        WHEN sentiment_score < 0 THEN 'negative'
+        ELSE 'neutral'
+    END AS sentiment
+FROM (
+    SELECT 
+        text,
+        sentiment(text) AS sentiment_score
+    FROM file('sentiment_data.txt', 'CSV', 'text string')
+)