Question: ( 2 ) Let L = { R } where R is a unary relation symbol. Find a first - order sentence in the language

(2) Let L={R} where R is a unary relation symbol. Find a first-order sentence in the language L such that for any structure M, we have M|=,>,RM is an equivalence relation on |M|
(2) Let L={R} where R is a unary relation symbol. Find

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