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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:
 def replace_event_annotations(event, newanns):
 """Replace event annotations with the provided ones."""

    _humilis = event.get("_humilis", {})
    if not _humilis:
        event["_humilis"] = {"annotation": newanns}
    else:
        event["_humilis"]["annotation"] = newanns