premise: A teacher wearing a red and black striped shirt is conducting a class of about 20 playing music.
hypothesis: A music teacher shows a class how to play a complicated song.
explanation_1: It is possible to conduct a music class on many topics and types of songs rather than just teaching how to play a complicated song.
explanation_2: The songs may not be complicated.
explanation_3: The teacher does not have to be a music teacher.  Conducting a class playing music does not mean the teacher shows them how to play a complicated song.
premise_logic: exists e2 e1 s1 s2 s3 x1 x2 x3 x4 x5 x6.(Theme(e2,x4) & Actor(e2,x1) & v_conduct(e2) & of(x4,x5) & n_music(x5) & of(x5,x6) & n_playing(x6) & n_date(x5) & a_date_day_20(x5) & a_date_day_20(x5) & r_about(x5) & n_class(x4) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_shirt(x3) & a_striped(s3) & Theme(s3,x3) & a_black(s2) & Theme(s2,x3) & a_red(s1) & Theme(s1,x3) & (x1 = x2) & n_teacher(x1))
hypothesis_logic: exists e1 p1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_show(e1) & Topic(x3,p1) & exists e2 s1 x4.(Theme(e2,x4) & Actor(e2,x3) & v_play(e2) & n_song(x4) & a_complicated(s1) & Theme(s1,x4)) & n_class(x3) & n_teacher(x1) & of(x1,x2) & n_music(x2))