Question about the 'visible' in annotations

[tyshiwo1]

Thank you for your work. When I load the annotations, I have some doubts about the 'visible' attribute. For example, the relation annotations of 50N4E.mp4/000682.png just like this:

[
{'class': 'light', 'bbox': None, 'attention_relationship': None, 'spatial_relationship': None, 'contacting_relationship': None, 'metadata': {'tag': '50N4E.mp4/light/000682', 'set': 'train'}, 'visible': False}, 
{'class': 'dish', 'bbox': None, 'attention_relationship': None, 'spatial_relationship': None, 'contacting_relationship': None, 'metadata': {'tag': '50N4E.mp4/dish/000682', 'set': 'train'}, 'visible': False}
]

Does this mean there is no bbox and relation in 50N4E.mp4/000682.png? So if this frame is tested, can we just ignore it?