The billboard is presenting the now showing movies.
The billboard is advertising a weightloss supplement.
A weightloss supplement is not a movie.
exists e2 e1 x1 x2 x3 x4.(n_now(x2) & n_billboard(x1) & Theme(e2,x2) & Actor(e2,x1) & v_present(e2) & Theme(e1,x4) & Actor(e1,x3) & v_show(e1) & n_movie(x4) & (x2 = x3))
exists e1 x1 x2 x3.(n_billboard(x1) & Theme(e1,x2) & Actor(e1,x1) & v_advertise(e1) & n_supplement(x2) & of(x2,x3) & n_weightloss(x3))