A group of people are backpacking through a grassy field.
The group of people are getting grass stains on their clothes.
Being on grass doesn't guarantee grass stains.
exists e1 s1 x1 x2 x3.(through(e1,x3) & n_field(x3) & a_grassy(s1) & Theme(s1,x3) & Actor(e1,x1) & v_backpack(e1) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 s1 x1 x2 x3 x4.(n_clothes(x4) & of(x4,x1) & n_thing(x1) & n_group(x1) & Theme(e1,x3) & Actor(e1,x1) & v_get(e1) & on(x3,x4) & n_stain(x3) & a_grass(s1) & Theme(s1,x3) & of(x1,x2) & n_people(x2))