get historical data by query

app.py

@@ -36,7 +36,7 @@ def historical_event_explorer(query :str, year: int = None)-> str: #it's import
     if year is not None and year in historical_data:
         return f"In {year}, {historical_data[year]}"
     elif query in historical_data:
-        return historical_data:
+        return historical_data[query]
     else:
         return "No historical events found for the given query."