A man in costume plays the keyboard in front of a sign reading "Sin with Sebastian".
A man in an elephant costume plays the electric keyboard.
Just because a man has a costume on does not mean it is an elephant costume.
exists e2 e1 x1 x2 x3 x4 x5 x6 x7 x8.(ne_nam_sebastian(x8) & ne_nam_sin(x7) & n_keyboard(x3) & in(e1,x4) & of(x4,x5) & with(e2,x8) & Theme(e2,x7) & Actor(e2,x6) & v_read(e2) & (x5 = x6) & n_sign(x5) & n_front(x4) & Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & in(x1,x2) & n_costume(x2) & n_man(x1))
exists e1 s1 x1 x2 x3 x4.(n_keyboard(x4) & a_electric(s1) & Theme(s1,x4) & Theme(e1,x4) & Actor(e1,x1) & v_play(e1) & in(x1,x2) & n_costume(x2) & of(x2,x3) & n_elephant(x3) & n_man(x1))