def METHOD_NAME(results):
    rslt_lst = []
    # make intersection set for utterance keys
    intersec_keys = []
    for x in results.keys():
        j = results[x]
        ks = j["utts"].keys()
        logging.info(x + ": has " + str(len(ks)) + " utterances")
        if len(intersec_keys) > 0:
            intersec_keys = intersec_keys.intersection(set(ks))
        else:
            intersec_keys = set(ks)
        rslt_lst.append(j)
    logging.info(
        "After merge, the result has " + str(len(intersec_keys)) + " utterances"
    )
    # merging results
    dic = dict()
    for k in intersec_keys:
        v = rslt_lst[0]["utts"][k]
        for j in rslt_lst[1:]:
            v.update(j["utts"][k])
        dic[k] = v
    return dic