def get_lang_type(language):
    """
    Accepts a String of the programming language and returns the language type.
    """

    procedural = ['Basic', 'C']
    object_oriented = ['C#', 'C++', 'Java', 'Python']
    functional = ['Lisp', 'Haskell', 'Scala']
    data_science = ['R', 'Jupyter Notebook', 'Julia']

    # Check if language string exists to avoid null.
    if language:
        if language in procedural:
            type = "Procedural"
        elif language in object_oriented:
            type = "Object Oriented"
        elif language in functional:
            type = "Functional"
        elif language in data_science:
            type = "Data Science"
        else:
            type = "Others"
        return type
    else:
        return None