Young people in yellow shirts prepare colorful food.
Young adults are preparing fruit trays.
The people couldn't prepare fruit trays if they are preparing colorful food.
exists e1 s1 s2 s3 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_prepare(e1) & n_food(x3) & a_colorful(s3) & Theme(s3,x3) & in(x1,x2) & n_shirt(x2) & a_yellow(s2) & Theme(s2,x2) & n_people(x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_prepare(e1) & n_tray(x2) & of(x2,x3) & n_fruit(x3) & n_adult(x1) & a_young(s1) & Theme(s1,x1))