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What example is the following? (This starts from the goal.)
Conclude the colour of a pet named Fritz.
The rule base (four rules):
1. If X croaks and X eats flies -Then X is a frog
2. If X chirps and X sings -Then X is a canary
3. If X is a frog -Then X is green
4. If X is a canary -Then X is yellow
Assume the following facts: