You are developing a chatbot application using azure video

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You are developing a chatbot application using Conversational Language Understanding (CLU) service. Below is the JSON structure of labeled utterance file that you need to upload. { "text": "turn the fan on", "intent": "switch_on", "language": "en-us", "entities": [ { "category": "device", "offset": 9, "length": 3 } ] } ] } What is the significance of offset value here ?