 In this way, Brentano again manages to satisfy the restriction on negative properties. His earlier theory takes propositions of the A-form to express simple existential judgement. Brentano now considers that to be a mistake because it introduces the complex S-that-is-not-P, which includes the negative part “not-P”. Again, the “not” here cannot be taken as an indicator of the quality of the judgement, since one would then deny the existence of an S-that-is P. With propositions of the E-form this problem does not arise. In this case, two interpretations are admissible, which makes “No S is P” an ambiguous proposition: it either expresses the simple negative existential judgement that no S-that-is-P exists, or the higher-order judgement that someone who accepts an S-that-is-P judges incorrectly.