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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 async def _get_annotations(entity_tag, connection):
 """Get annotations for the specified entity :return dict: The annotations for the entity """

    facade = client.AnnotationsFacade.from_connection(connection)
    result = (await facade.Get([{"tag": entity_tag}])).results[0]
    if result.error is not None:
        raise JujuError(result.error)
    return result.annotations