Premise: Alpha Centauri ( α Centauri , abbreviated Alpha Cen , α Cen ) is the closest star system to the Solar System , being 4.37 ly from the Sun . Alpha Centauri A ( α Cen A ) has 1.1 times the mass and 1.519 times the luminosity of the Sun , while Alpha Centauri B ( α Cen B ) is smaller and cooler , at 0.907 times the Sun 's mass and 0.445 times its visual luminosity .
Hypothesis: Alpha Centauri has an abbreviation.
Label: ENTAILMENT