premise: A man in a black shirt working on a guitar.
hypothesis: A guy working on his bass guitar.
explanation_1: The guitar may be bass guitar or lead guitar, it depends.
explanation_2: We have no idea he is working on his bass guitar, he could be working on any type of guitar.
explanation_3: The specific type of guitar could vary and without knowing it is a bass guitar one would assume it not to be.
premise_logic: exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x4) & n_guitar(x4) & Actor(e1,x3) & v_work(e1) & (x1 = x3) & in(x1,x2) & n_shirt(x2) & a_black(s1) & Theme(s1,x2) & n_man(x1))
hypothesis_logic: exists e1 x1 x2 x3 x4.(a_topic(x1) & on(e1,x3) & n_guitar(x3) & of(x3,x4) & n_bass(x4) & of(x3,x1) & n_male(x1) & Actor(e1,x2) & v_work(e1) & (x1 = x2) & n_guy(x1))
premise_sim: exists e1 s1 x1 x2 x3 x4.(v_work(e1) & on(e1,x4) & n_shirt(x2) & n_man(x1) & n_guitar(x4) & in(x1,x2) & a_topic(x1) & a_black(s1) & Theme(s1,x2) & Actor(e1,x3) & (x1 = x3))
hypothesis_sim: exists e1 x1 x2 x3 x4.(v_work(e1) & on(e1,x3) & of(x3,x4) & of(x3,x1) & n_male(x1) & n_guy(x1) & n_guitar(x3) & n_bass(x4) & a_topic(x1) & Actor(e1,x2) & (x1 = x2))