Question about the Nav-R1-2.jsonl

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Hi, thank you for your wonderful work, but I still have some issues about your CoT dataset. I have downloaded your dataset and found that there are four files, which are Nav-R1-2.jsonl Nav-R1-3.jsonl Nav-R1-4.jsonl Nav-R1.jsonl. I sampled several examples in the Nav-R1-2.jsonl as follow.

I am confused what "cabinet|42", "shelf|56" refer to? In the "cot" content provided, for example, "Okay, so I need to describe the shelf|56 in scene0000_00. Let me start by looking at the provided captions and object descriptions.\n\nFirst, I'll check the captions.", it seems that there are extra captions as the input of Gemini 2.5 pro but not provided here.