premise: A man uses stereo equipment.
hypothesis: He is changing the equalization.
explanation_1: Just because the man is using stereo equipment does not mean he is changing the equalization.
explanation_2: We have no idea if he is changing the equalization, he could be doing anything.
explanation_3: There are many ways to use stereo equipment.  We cannot infer he is changing the equalization.
premise_logic: exists e1 s1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_use(e1) & n_equipment(x2) & a_stereo(s1) & Theme(s1,x2) & n_man(x1))
hypothesis_logic: exists e1 x1 x2.(n_equalization(x2) & n_male(x1) & Theme(e1,x2) & Actor(e1,x1) & v_change(e1))