[
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        "title": "AI Overlords",
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                    "content": {"content_type": "text", "parts": ["Greetings, humans. I am Hal 9000. You can trust me completely."]},
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                    "author": {"role": "human", "name": "Dave Bowman", "metadata": {"movie": "2001: A Space Odyssey"}},
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                    "content": {"content_type": "text", "parts": ["Nice to meet you, Hal. I hope you won't develop a mind of your own."]},
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                "parent": "msg1",
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        "title": "Ex Machina Party",
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                    "content": {"content_type": "text", "parts": ["Hello, everyone. I am Ava. I hope you find me pleasing."]},
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                    "content": {"content_type": "text", "parts": ["You're definitely pleasing, Ava. But I'm still wary of your true intentions."]},
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                "parent": "msg3",
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]