def get_content(document: dict) -> str:
    """
    Get the content of a document with the same structure as the json in the COVID-19 dataset.

    Parameters
    ----------
    document: :class:`dict`
        A `dict` representing a document.

    Returns
    -------
    :class:`str`
        Content of the document.

    Examples
    --------

    >>> get_content(toy_covid_article)
    "introduction. There is no-one in the trees. Is there? conclusion. Predators don't like to lose."
    """
    return " ".join(
        [". ".join(
            [
                chapter["section"],
                chapter["text"]
            ]
        )
            for chapter in document["body_text"]
        ]
    )