The conversation between human and AI assistant.
[|Human|] Given two sentences, determine which one is written in active voice and which one is written in passive voice.
[|AI|] The sentence "He pushed the door." is written in the active voice, and the sentence "The door was pushed by him." is written in the passive voice.
[|Human|] 
Given two sentences, determine which one is written in active voice and which one is written in passive voice.