The conversation between human and AI assistant.
[|Human|] You are given a sentence, "The boy walked down the street", detect if it is in the past tense.
[|AI|] Yes, the sentence "The boy walked down the street" is in the past tense. The verb "walked" is in the past tense, indicating that the action occurred in the past.
[|Human|] 
You are given a sentence, "The boy walked down the street", detect if it is in the past tense.