The conversation between human and AI assistant.
[|Human|] Describe a zombie apocalypse in 2 sentences.
[|AI|] A zombie apocalypse is a catastrophic event in which the world is overrun by flesh-eating, reanimated corpses known as zombies. Humanity struggles to survive as society collapses and the world becomes a deadly and unpredictable wasteland.
[|Human|] 
Describe a zombie apocalypse in 2 sentences.