A man in a white uniform with blue trim prepares food for serving.
A man dressed in black is serving today.
The man is either wearing white or black. He cannot be preparing the food for serving, and be serving at the same time.
exists e1 s1 s2 x1 x2 x3 x4 x5.(Theme(e1,x4) & Actor(e1,x1) & v_prepare(e1) & for(x4,x5) & n_serve(x5) & n_food(x4) & in(x1,x2) & with(x2,x3) & n_trim(x3) & a_blue(s2) & Theme(s2,x3) & n_uniform(x2) & a_white(s1) & Theme(s1,x2) & n_man(x1))
exists e2 e1 s1 x1 x2 x3 x4.(Time(e2,x4) & n_today(x4) & Actor(e2,x1) & v_serve(e2) & Theme(e1,s1) & Theme(s1,x3) & a_black(s1) & Theme(e1,x2) & v_dress(e1) & (x1 = x2) & n_man(x1))