This is a follow-up on de Marneffe & Tonhauser, testing whether the rise-fall-rise contour interacts with the speaker's knowledge state. In particular, if the RFR doesn't have a pre-defined "uncertainty" meaning, but rather is interpreted in a context-dependent way, we expect:
- Scalar implicatures should be stronger when RFR is present and speaker is knowledgeable compared to neutral prosodic baseline.
- Scalar implicatures should be weaker when RFR is present and speaker is ignorant compared to neutral prosodic baseline.