Darth Vader playing a violin on a sunny day.
Darth Vader is playing a banjo.
A violin isn't the same as a banjo
exists e1 s1 x1 x2 x3 x4.(ne_org_vader(x1) & (x1 = x2) & ne_org_darth(x2) & on(e1,x4) & n_day(x4) & a_sunny(s1) & Theme(s1,x4) & Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_violin(x3))
exists e1 x1 x2 x3.(ne_per_vader(x1) & (x1 = x2) & ne_per_darth(x2) & Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_banjo(x3))