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Use a first-order language with two constants “−1” and “1”, the unary function s(x), denoting the...

Use a first-order language with two constants “−1” and “1”, the unary function s(x), denoting the “successor of x”, and the binary predicate Less(x, y), representing “x is less than y”. Consider the following Horn database, with two rules labeled A and B and fact C:

A. Less(x, y) => Less(x, s(y))
B. Less(s(x), y) => Less(x, y)
C. Less(s(−1), 1)

Using forward chaining (and substitution), begin enumerating all facts implied by fact C, given rules A and B, until you prove Less(−1, s(1)). Show all the facts you generated, starting with fact C.

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