A group of people work on the side of a large metal structure that is very blue on a cloudy day.
The building is painted is a shade of  blue that appears brighter on dull days.
Just because the structure is blue does not mean that it appears brighter on some days.
exists e1 s1 s2 s3 x1 x2 x3 x4 x5 x6 x7.(n_side(x3) & on(e1,x3) & on(s2,x7) & n_day(x7) & a_cloudy(s3) & Theme(s3,x7) & r_very(s2) & Theme(s2,x6) & a_blue(s2) & (x3 = x6) & of(x3,x4) & n_structure(x4) & of(x4,x5) & n_metal(x5) & a_large(s1) & Theme(s1,x4) & Actor(e1,x1) & v_work(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 p1 x1 x2.(n_building(x1) & exists e2 s1 x3 x4 x5 x6 x7.((x1 = x3) & of(x3,x4) & on(e2,x7) & n_day(x7) & a_dull(s1) & Theme(s1,x7) & Time(e2,x6) & n_brighter(x6) & Actor(e2,x5) & v_appear(e2) & (x4 = x5) & n_blue(x4) & n_shade(x3)) & Theme(e1,x2) & v_paint(e1) & (x1 = x2))