premise: A rocker standing with one foot on the stage holding the microphone attached to the stand over his head.
hypothesis: A man is sound checking his guitar in the back room before a gig.
explanation_1: The rocker can't be on the stage while in the back room.
explanation_2: Answer: Either the man is checking his guitar or holding the microphone.
explanation_3: man can't be in back room if he is on stage
premise_logic: exists e1 e2 e3 x1 x2 x3 x4 x5 x6 x7.(n_head(x7) & of(x7,x4) & n_male(x4) & n_stand(x6) & n_microphone(x5) & n_stage(x4) & over(e3,x7) & to(e3,x6) & Theme(e3,x1) & v_attach(e3) & for(e1,e2) & Theme(e2,x5) & Actor(e2,x2) & v_hold(e2) & on(e1,x4) & with(e1,x3) & n_foot(x3) & card_eq_1(x3) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_rocker(x1))
hypothesis_logic: exists e1 s1 s2 x1 x2 x3 x4.(n_room(x3) & a_back(s2) & Theme(s2,x3) & for(s1,e1) & in(e1,x3) & before(x3,x4) & n_gig(x4) & Theme(e1,x2) & Actor(e1,x1) & v_check(e1) & n_guitar(x2) & of(x2,x1) & n_male(x1) & Theme(s1,x1) & a_sound(s1) & n_man(x1))