premise: An old black man sitting on a couple of grocery crates playing the string guitar during the day.
hypothesis: The man has been playing the blues.
explanation_1: The genre of music being the blues cannot be inferred.
explanation_2: The string guitar can be used to play many different kinds of music, not necessarily just the blues.
explanation_3: There are many genres of music besides the blues.
premise_logic: exists e2 e1 s1 s2 x1 x2 x3 x4 x5 x6 x7 x8 x9.(n_day(x9) & n_guitar(x7) & of(x7,x8) & n_string(x8) & a_topic(x1) & on(e1,x3) & during(e2,x9) & Theme(e2,x7) & Actor(e2,x6) & v_play(e2) & (x3 = x6) & of(x3,x4) & n_crate(x4) & of(x4,x5) & n_grocery(x5) & n_couple(x3) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_man(x1) & a_black(s2) & Theme(s2,x1) & a_old(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 x1 x2.(n_blues(x2) & n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1))