# Question

(Adapted from Bar wise and Etchemendy (1993)) Given the following, can you prove that the unicorn is mythical? How about magical? Horned? If the unicorn is mythical, then it is immortal, hut if it is not mythical, then it is a mortal mammal. If the unicorn is either immortal or a mammal, then it is horned. The unicorn is magical if it is horned.

## Answer to relevant Questions

Any propositional logic sentence is logically equivalent to the assertion that each possible world in which it would be false is not the case. From this observation, prove that any sentence can be written in CNF.Extend PL-WUMPUS-AGENT so that it keeps track of all relevant facts within the knowledge base.Represent the following sentences in first-order logic, using a consistent vocabulary (which you must define):a. Some students took French in spring 2001.b. Every student who takes French passes it.c. Only one student took ...Using the set axioms as examples write axioms for the list domain, including all the constants, functions, and predicates mentioned in the chapter.Consider the subscription lattices shown in Figure.a. Construct the lattice for the sentence Employs (Mother (John), Father (Richard)).b. Construct the lattice for the sentence Employs (IBM. y) (“Everyone works for ...Post your question

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