Thanks a ton for all these answer. Definitely had a couple of a-ha moments from these. Although I don't have enough time in hand at the moment to learn Prolog.

Thanks a ton for all these answer. Definitely had a couple of a-ha moments from these. Although I don't have enough time in hand at the moment to learn Prolog. But it's definitely one of the things I'll experiment with. Thank you all again. :)