premise: Minor League Baseball is a hierarchy of baseball leagues such as the International League, the Pacific Coast League, and the Mexican League.
hypothesis: Minor League Baseball is a hierarchy of professional baseball leagues in the Americas that compete at levels below Major League Baseball ( MLB ) and provide opportunities for player development and a way to prepare for the major leagues . The Pacific Coast League ( PCL ) is a Minor League Baseball league operating in the Western , Midwestern , and Southeastern United States .