def load_sentence_pair(file_path):
    """
    load sentence pair
    return list of [sent1, sent2]
    """
    datas = []
    with open(file_path, 'r', encoding='utf-8') as f:
        lines = f.readlines()
        if len(lines[0].strip().split('\t')) == 2:
            return [
                line.strip().split('\t') for line in lines
            ]
        else:
            return [
                    line.strip().split('\t') for line in [
                    '\t'.join(line.strip().split('\t')[5:7]) for line in lines
                ]
            ]