(a) What do you mean by 'knowledge engineering? State all the important steps for appropriate knowledge engineering in FOL.

(b) Suppose a KB contains just four sentences in FOL as follows.

vx King(x) Greedy(x) Evil(x).

King(John).

Greedy (Aurangzeb).

Brother (Shuja, Aurangzeb).

Also assume that there are only two objects Shuja, Aurangzeb. Can you prove that Aurangzeb is evil from this? Justify your answer with

all the necessary steps mentioning the rules applied.