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Consider a structure S1 where the domain of discourse is the set of natural numbers and we have a relation/predicate x less than y, denoted

Consider a structure S1 where the domain of discourse is the set of natural numbers and we have a relation/predicate x less than y, denoted R(x,y).

Is the sentence (x) (y) R(x, y) true in S1? Explain why!

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