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Question 7

Suppose a regression planner was used with the goal:

[sitting_at(rob,o109),sitting_at(parcel,lab2)]

Draw the first-level of the search tree showing the possible actions and the weakest preconditions to achieve this goal.
Show one element on the next level of the search tree. (That is one action to achieve one of the goals you constructed in the preceding part, and the corresponding weakest precondition.)
What happens when the naive STRIPS planner is used with this goal? (A qualitative description of what will happen is what is needed).
Describe qualitatively what happens when STRIPS is used so that it protects subgoals.