The Right Frontier Constraint (RFC) claims that antecedents are only available for anaphoric reference if they are located at the right hand side of any level of a linearly ordered discourse parse tree. We show that this constraint does hold only under certain conditions - which, however, apply for most circumstances of everyday talk. The data of our analysis in which the RFC does not hold come from a corpus of chat communication. Prom our findings we argue that the RFC is best viewed as a conditional constraint.
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