Question: (a) With a suitable example, show how event calculus helps us to solve real-life Al problems. (b) Suppose, following is a PDDL action schema for

(a) With a suitable example, show how event calculus helps us to solve real-life Al problems.

(b) Suppose, following is a PDDL action schema for flying a plane from one location to another:

Action(Fly (p, from, to),

PRECOND:At (p, from) A Plane (p) ^ Airport (from) ^ Airport (to)

EFFECT: At (p, from) A At (p, to))

Rewrite these after proper choice of some constants to instantiate the variables, yielding a ground (variable-free) action.

(c) Why hierarchical planning is important in Al?

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