The plants or shrubs have not been trimmed and are overgrown.
The plants are overgrown
have not been trimmed implies  overgrown
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 s1 x1.(n_plant(x1) & Theme(s1,x1) & a_overgrown(s1))