test.dot

digraph {
    Book_1343868283 [label="Book"]
    split_tuple_147018219 [label="Tuple3"];

    String_1221237120 [label="String"]

    edge [label="SelectField"];
    Book_1343868283 -> String_1221237120;


    Option_476122992 [label="Option[Author]"]

    edge [label="SelectField"];
    Book_1343868283 -> Option_476122992;


    Meta_1039228012 [label="Meta"]

    edge [label="SelectField"];
    Book_1343868283 -> Meta_1039228012;


    String_1175992241 [label="String"]

    edge [label="SelectField"];
    Meta_1039228012 -> String_1175992241;



    edge [label="_1"];
    String_1221237120 -> split_tuple_147018219;

    edge [label="_2"];
    Option_476122992 -> split_tuple_147018219;

    edge [label="_3"];
    String_1175992241 -> split_tuple_147018219;


}