def people_utwente(initials, surname_prefix, surname) -> str:
    """
    Template tag which resolves teacher names into a people.utwente.nl URL

    :param initials: string
    :param surname_prefix: string
    :param surname: string
    :return: people.utwente.nl URL for given teacher
    """
    if surname_prefix is None:
        surname_prefix = ""

    return "https://people.utwente.nl/{}{}{}" \
        .format(initials, surname_prefix, surname).replace(' ', '')