Suppose that the working storage of a KBS has the following facts and rules. Show how new facts can

be added using forward and backward chaining?

Facts:

Rules: $1)A^{{?}^{?}}Dx$

$C^{{?}^{?}}xY$

BvvE$Y$

$A^{{?}^{?}}CD$

notAvvx$G$ HOW ABOUT E and H