The setting sun outlines a group of four people and the surrounding trees.
The moon darkens the group.
The moon can not darken the group of the setting sun outlines the group
exists e1 e2 x1 x2 x3 x4 x5 x6.(n_tree(x6) & Actor(e1,x6) & v_surround(e1) & n_set(x1) & Time(e2,x1) & Theme(e2,x3) & Actor(e2,x2) & v_outline(e2) & subset_of(x6,x3) & subset_of(x4,x3) & of(x4,x5) & n_people(x5) & card_eq_4(x5) & n_group(x4) & n_sun(x2))
exists e1 x1 x2.(n_group(x2) & n_moon(x1) & Theme(e1,x2) & Actor(e1,x1) & v_darken(e1))