premise: Canopus ( ), also designated Alpha Carinae (α Carinae, abbreviated Alpha Car, α Car), is the brightest star in the southern constellation of Carina, and the second-brightest star in the night-time sky, after Sirius. Canopus's visual magnitude is −0.74, and it has an absolute magnitude of −5.71.
hypothesis: The visual magnitude of Alpha Car is -0.74.
reason: The excerpt states that Alpha Car is an abbreviation of Alpha Carinae and states that it's visual magnitude is -0.74, which means the statement is correct. The model was likely fooled by the use of Alpha Car instead of Canopus.