premise: A dark-haired drummer is playing his set with enthusiasm.
hypothesis: The drummer is performing.
explanation_1: The drummer is part of the overall description of a dark-haired drummer and he playing his set means performing.
explanation_2: playing his set is inferred as  performing.
explanation_3: playing his set with enthusiasm means he is performing
premise_logic: exists e1 s1 x1 x2 x3.(with(e1,x3) & n_enthusiasm(x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_set(x2) & of(x2,x1) & n_male(x1) & n_drummer(x1) & a_dark-haired(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 x1.(n_drummer(x1) & Actor(e1,x1) & v_perform(e1))