premise: The pitcher wearing black heaves the ball toward the catcher.
hypothesis: The Yankees are at practice.
explanation_1: There are many baseball teams around the world including Little League teams, so this may or may not be describing the Yankees.
explanation_2: Just because the pitcher wearing black heaves the ball toward the catcher, doesn't mean the Yankees are at practice.
explanation_3: Heaving a ball doesn't mean that you are in actual practice.
premise_logic: exists e1 s1 x1 x2 x3 x4 x5.(n_catcher(x5) & n_pitcher(x1) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & toward(x3,x5) & n_ball(x4) & (x3 = x4) & n_heave(x3) & a_black(s1) & Theme(s1,x3) & (x1 = x2))
hypothesis_logic: exists p1 x1.(n_yankee(x1) & exists x2.(at(x1,x2) & n_practice(x2)))