def get_captions(context):
    """Extract captions from context and map them to more readable names."""
    caption_keys = (
        ('BO_SAVE_CAPTION', 'save_caption'),
        ('BO_SAVE_AS_NEW_CAPTION', 'save_as_new_caption'),
        ('BO_SAVE_AND_CONT_CAPTION', 'save_and_cont_caption'),
        ('BO_SAVE_AND_ADD_ANOTHER_CAPTION', 'save_and_add_another_caption'),
        ('BO_DELETE_CAPTION', 'delete_caption'),
    )
    captions = {}
    for old_key, new_key in caption_keys:
        captions[new_key] = context.get(old_key, '')
    return captions