Exercise $5\mathrm{.}7$:

Consider the following knowledge base and assumables aimed to explain why people are acting suspiciously:

goto$\_$forest $$walking$.$

get$\_$gun$$hunting$.$

goto$\_$forest$$hunting $.$

get$\_$gun$$robbing$.$

goto$\_$bank$$robbing$.$

goto$\_$bank$$banking$.$

fill$\_$withdrawal$\_$form $$banking$.$

false $$banking $$robbing$.$

false $$wearing$\_$good$\_$shoes$$goto$\_$forest.

assumable walking,hunting,robbing,banking.

Suppose get$\_$gun is observed. What are all of the minimal explanations for this observation?

Suppose get$\_$gun$$goto$\_$bank is observed. What are all of the minimal explanations for this observation?

Is there something that could be observed to remove one of these as a minimal explanation? What must be added to be able to explain this?

What are the minimal explanations of goto$\_$bank?

What are the minimal explanations of goto$\_$bank$$get$\_$gun $$fill$\_$withdrawal$\_$form?