A competition on horses on a beautiful day amongst green.
A group of cats performing reggae.
It cannot be competition for horses and a performance for cats at once.
exists s1 s2 x1 x2 x3 x4.(a_topic(x1) & on(x1,x2) & on(x2,x3) & n_green(x3) & a_amongst(s2) & Theme(s2,x3) & of(x3,x4) & n_day(x4) & a_beautiful(s1) & Theme(s1,x3) & n_horse(x2) & n_competition(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_perform(e1) & n_reggae(x4) & (x1 = x3) & of(x1,x2) & n_cat(x2) & n_group(x1))