如何编码不是事物的文字
    Example
    Here, the name of the crcpress has a string value, “CRC Press”, that is not a URI, and is depicted in a rectangular box. Unlike the subject and predicate in this graph, the object is a literal, not a URI.
    image.png
    In turtle, this is written as follows. Note the trailing “.” that terminates the triple statement.
    http://crcpress.com/uri http://example.org/name “CRC Press” .