Text: Although this approach seems reasonable, there is a potential for substantial overstatement or understatement because the amount of estimated domestic postage-based terminal dues calculated under this procedure represents 4 percent of total IC payments to FPAs and 14 percent of total DC payments.
Entailment: The reasonable-seeming approach may include some substantial over- or understatement.
Contradiction: This approach has nothing with the potential for error in it.