The reason you are not seeing this is that the problem is too hard for and language is very complex. There are Banks that would pay Millions if somebody could

The reason you are not seeing this is that the problem is too hard for and language is very complex. There are Banks that would pay Millions if somebody could extract business relations between companies. It would probably be enough in a fist step to know what a company name is an see if 2 turn up in a sentence. The author is asking for something that looks even harder to me. First identify book titles. And then identify a recommendation. I think machine learners like to play with images, because training is easy (recapture). But how should they go an tag book contents for recommendations. It takes much more time than identifying vehicles or traffic signs and requires more education. Before analyzing something like that there will other things be done. Like work on the structure of sentences (who interacts). Or if some statement has a positive or negative tone.