Exercise 8.25

In Chapter csp-chapter, we used equality to indicate the relation between a variable and its value. For instance, we wrote ${WA}{red}$ to mean that Western Australia is colored red. Representing this in first-order logic, we must write more verbosely ${ColorOf}({WA}){red}$. What incorrect inference could be drawn if we wrote sentences such as ${WA}{red}$ directly as logical assertions?

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