Establish why ClaimSpy adopts a universal interpretation of the Al–Zn claim

Establish why ClaimSpy’s Claim Cards interpret the Al50Zn50 single-solid-phase-below-700-K claim as requiring a single solid phase at every temperature below 700 K, rather than adopting an existential interpretation when that reading is also faithful to the claim.

Background

The Al–Zn calculation performed by ClaimSpy agrees with the expert’s phase-diagram calculation, finding a single solid phase only above approximately 600 K. Nevertheless, every relevant Claim Card adopts a universal interpretation requiring a single solid phase throughout the entire temperature range below 700 K, producing a negative verdict while the expert assigns the claim a cannot-determine label because its temperature range is unspecified. The paper explicitly leaves unexplained why the cards selected this interpretation.