def format_url(category: str, year: int, month: str, day: str) -> str:
    """

    It returns a URL from The Guardian website with links for the articles of the given date
    and category

    :param category: A String representing the category
    :param year: An integer representing the year
    :param month: A String representing the first three letters of the month in lower case
    :param day: A String representing the day
    :return: The URL
    """
    return f"https://www.theguardian.com/{category}/{year}/{month}/{day}"