The plants or shrubs have not been trimmed and are overgrown.
The green plants are overgrown at the park
Just because the plants are overgrown doesn't mean they are at a park.
exists s1 x1 x2.((n_plant(x2) | n_shrub(x2)) & (n_plant(x1) | n_shrub(x1)) & Theme(s1,x2) & a_overgrown(s1) & -exists e1.(Theme(e1,x1) & v_trim(e1)))
exists e1 s1 x1 x2.(n_park(x2) & n_plant(x1) & a_green(s1) & Theme(s1,x1) & at(e1,x2) & Theme(e1,x1) & v_overgrow(e1))