The shadows of trees are projected onto the field by the sun.
It is nighttime and the trees can't be seen
Sun cannot be found during night time.
exists e1 x1 x2 x3 x4.(n_sun(x4) & n_field(x3) & n_shadow(x1) & Actor(e1,x4) & onto(e1,x3) & Theme(e1,x1) & v_project(e1) & of(x1,x2) & n_tree(x2))
exists s1 x1 x2.(n_tree(x2) & n_thing(x1) & -exists e1 p1.(exists e2.(Theme(e2,x2) & v_see(e2)) & Topic(e1,p1) & Actor(e1,x2) & v_can(e1)) & Theme(s1,x1) & a_nighttime(s1))