def to_lower_normalizer(name):
    """Utility normalizer that converts a name to lowercase unless it is an
    acronym. To be used as parameter of download_freebase_type().
    """
    words = name.split()
    result = []
    for w in words:
        if not w.isupper():
            w = w.lower()
        result.append(w)
    return ' '.join(result)
