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Solution to part (c)
Suppose we were to observe g (i.e., observe G=true).
What factor(s) are removed and what factor(s) are created?
We remove the factor P(GF), as this is the only factor in which G
appears and create the factor f_{3}(F) defined by:
F  Value 
true  0.26 
false  0.96

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material, ©David Poole, Alan Mackworth and Randy Goebel, 1999