In Estonian the prototypical non-verbal predicate is a noun or an adjective in the nominative case. The noun expresses class-inclusion, the adjective — a property. The prototypical predicative is non-marked in regard to time-stability. Time-stability can be marked by a non-prototypical form both in the case of class-inclusion as well as in the case of property. In the case of class-inclusion, temporary and random class-membership are marked by the translative, not by the essive. This feature makes Estonian similar to Russian and the Baltic languages and distinguishes it from Finnish. The essive is a relatively new case in Standard Estonian and its use is restricted. In copula sentences the essive can only be found as a marker of secondary predication. Temporariness of a property is marked by a non-prototypical clause pattern. The ways of marking the property depend on the semantic type of the property.
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