Inference engine
Knowledge base
4
3
2
1
Stench
Stench
START
1
Breeze
Gold
Stench
Breeze
2
Breeze
PIT
Breeze
PIT
3
PIT
Breeze
Breeze
4
OK
OK
A
OK
B
A
A
OK
OK
OK
B
A
A
OK
OK
P?
P?
OK
B
A
A
OK
OK
P?
P?
OK S
A
P
B
A
A
OK
OK
P?
OK
P?
OK S
A
W
P
B
A
A
P?
OK
OK S
A
A
P?
OK
OK
W
P
B
A
A
OK
P?
OK
A
OK
P?
OK
OK S
A
OK
W
P
B
A
A
P?
OK
W
A
OK
A
OK
P? BGS OK
OK
OK S
A
B
S
A
A
A
OK
OK
P?
P?
P?
OK B
A
P?
M(
)
x
x
x
x x
x
x
x
xx
x
x
x
x
x
x
x
x
x
x
x
M(KB)
x
x
x
x
x
x
x
x
x
x
x
xx
x
x
x
x
x
x
x
x
x
x
x
x
x