The shadows of trees are projected onto the field by the sun.
There are some clouds
There do not have to be clouds for trees to project shadows.
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 p1 x1 x2.((x1 = x2) & n_cloud(x2))