Question: 1 In this exercise, use the sentences you wrote in Exercise 6 to answer a question by using a backward-chaining algorithm. a. Draw the proof

1 In this exercise, use the sentences you wrote in Exercise 6 to answer a question by using a backward-chaining algorithm.

a. Draw the proof tree generated by an exhaustive backward-chaining algorithm for the query 9 h Horse(h), where clauses are matched in the order given.

b. What do you notice about this domain?

c. How many solutions for h actually follow from your sentences?

d. Can you think of a way to find all of them? (Hint: See Smith et al. (1986).)

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