Suppose that some knowledge base contains various propositional-logic sentences that utilize symbols A, B, C, D (connected with various connectives). There are only two cases when the knowledge base is false:

- First case: when A is true, B is true, C is true, D is true.

- Second case: when A is true, B is false, C is true, D is false.

In all other cases, the knowledge base is true.

Write a conjunctive normal form (CNF) for the knowledge base.

answer; i do believe that the correct answer to the above statement is craig should use scheduling

there is no universally accepted definition of art. although commonly used to describe something of beauty, or a skill which produces an aesthetic result, there is no clear line in principle between (say) a unique piece of handmade sculpture, and a mass-produced but visually attractive item. we might say that art requires thought - some kind of creative impulse - but this raises more questions: for example, how much thought is required? if someone flings paint at a canvas, hoping by this action to create a work of art, does the result automatically constitute art?