premise: A male guitar player is vigorously singing a not to a song in a poorly lit room.
hypothesis: The man is buying a new guitar at the store.
explanation_1: One cannot be vigorously singing a song while buying a guitar at the same time.
explanation_2: The subject cannot be buying a new guitar if he is singing.
explanation_3: The man cannot be singing and buying a guitar at the same time.
premise_logic: exists x1 x2 x3.(-exists e1 s1 s2 x4 x5 x6.(a_vigorously(s2) & Manner(e1,s2) & in(e1,x6) & n_room(x6) & a_lit(s1) & Theme(s1,x6) & r_poorly(x6) & to(e1,x5) & n_song(x5) & Theme(e1,x4) & Actor(e1,x1) & v_sing(e1) & n_a(x4)) & n_player(x1) & of(x1,x3) & n_guitar(x3) & of(x1,x2) & n_male(x2))
hypothesis_logic: exists e1 s1 x1 x2 x3.(n_store(x3) & n_man(x1) & at(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_buy(e1) & n_guitar(x2) & a_new(s1) & Theme(s1,x2))