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Solve the following problem using Python, implementing the functions described below, one line at a time
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<USER_TASK:>
Description:
 def get_user_orcid(self, user_id, password, redirect_uri):
 """Get the user orcid from authentication process. Parameters :param user_id: string The id of the user used for authentication. :param password: string The user password. :param redirect_uri: string The redirect uri of the institution. Returns ------- :returns: string The orcid. """

        response = self._authenticate(user_id, password, redirect_uri,
                                      '/authenticate')

        return response['orcid']