premise: A group of people playing guitars and singing.
hypothesis: The group is a folk music band practicing before their first gig.
explanation_1: You can not infer the music is folk music.
explanation_2: Guitars are used in many musical genres, so the group may not be playing folk music. The group may also not be practicing; they may be in a performance. And if they are practicing, they may be seasoned musicians and not necessarily gearing up for their first gig.
explanation_3: Just because a group of people playing guitars and singing doesn't mean the group is a folk music band practicing before their first gig.
premise_logic: exists e1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & of(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_play(e1) & n_singing(x6) & n_guitar(x5) & subset_of(x6,x4) & subset_of(x5,x4) & (x2 = x3) & n_people(x2) & n_group(x1))
hypothesis_logic: exists p1 s1 x1 x2.(n_gig(x2) & a_first(s1) & Theme(s1,x2) & of(x2,x1) & n_thing(x1) & n_group(x1) & before(p1,x2) & exists x3 x4 x5 x6.((x1 = x3) & n_practicing(x3) & of(x3,x6) & n_band(x6) & of(x3,x5) & n_music(x5) & of(x3,x4) & n_folk(x4)))
premise_sim: exists e1 x1 x2 x3 x4 x5 x6.(v_play(e1) & subset_of(x6,x4) & subset_of(x5,x4) & of(x1,x2) & n_singing(x6) & n_people(x2) & n_guitar(x5) & n_group(x1) & a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & (x2 = x3))
hypothesis_sim: exists p1 s1 x1 x2.(of(x2,x1) & n_thing(x1) & n_group(x1) & n_gig(x2) & exists x3 x4 x5 x6.(of(x3,x6) & of(x3,x5) & of(x3,x4) & n_practicing(x3) & n_music(x5) & n_folk(x4) & n_band(x6) & (x1 = x3)) & before(p1,x2) & a_first(s1) & Theme(s1,x2))