Two children are dressed up like characters in Michael Jackson's' Thriller' video.
The children are dressed up for Halloween.
One dressing up as Thriller characters does not automatically mean it's Halloween.
exists e1 s1 x1 x2 x3 x4 x5 x6 x7.(in(e1,x7) & n_video(x7) & of(x7,x6) & ne_nam_thriller(x6) & of(x6,x3) & n_'s(x3) & (x3 = x5) & ne_per_jackson(x5) & (x3 = x4) & ne_per_michael(x4) & like(e1,x2) & n_character(x2) & a_up(s1) & Manner(e1,s1) & Theme(e1,x1) & v_dress(e1) & n_child(x1) & card_eq_2(x1))
exists e1 s1 x1 x2.(ne_geo_halloween(x2) & n_child(x1) & a_up(s1) & Manner(e1,s1) & for(e1,x2) & Theme(e1,x1) & v_dress(e1))