def load_token(a_token_el):
    """
    load token el into dict

    :param lxml.etree._Element a_token_el: a token element
    e.g., <token number="1" sentence="2" t_id="7">Methodes</token>

    :rtype: dict
    :return: dict containing the following keys
    ['number', 'sentence', 't_id', 'text']
    """
    token_dict = dict(a_token_el.attrib)
    token_dict['text'] = a_token_el.text

    return token_dict