A surfer with a large white surfboard and tether line is standing on the beach on an overcast day.
A surfer with a large purple surfboard and tether line is standing on the beach on an sunny day.
The surfboard is either white or it is purple. The day cannot be sunny and overcast at the same time.
exists e1 s1 s2 s3 x1 x2 x3 x4 x5 x6 x7.(n_beach(x6) & on(e1,x7) & n_day(x7) & a_overcast(s3) & Theme(s3,x7) & on(e1,x6) & Actor(e1,x1) & v_stand(e1) & with(x1,x2) & n_line(x4) & of(x4,x5) & n_tether(x5) & n_surfboard(x3) & subset_of(x4,x2) & subset_of(x3,x2) & a_white(s2) & Theme(s2,x2) & a_large(s1) & Theme(s1,x2) & n_surfer(x1))
exists e1 s1 s2 x1 x2 x3 x4 x5 x6 x7 x8.(n_beach(x7) & on(e1,x8) & n_day(x8) & a_sunny(s2) & Theme(s2,x8) & on(e1,x7) & Actor(e1,x1) & v_stand(e1) & with(x1,x2) & n_line(x5) & of(x5,x6) & n_tether(x6) & n_surfboard(x4) & subset_of(x5,x2) & subset_of(x4,x2) & of(x2,x3) & n_purple(x3) & a_large(s1) & Theme(s1,x2) & n_surfer(x1))