People with their heads bowed down pulling weeds.
they are at the bottom of the ocean
People would not be able to pull weeds at the bottom of the ocean.
exists e1 e2 s1 x1 x2 x3.(for(e1,e2) & Theme(e2,x3) & Actor(e2,x1) & v_pull(e2) & n_weed(x3) & a_down(s1) & Manner(e1,s1) & Actor(e1,x1) & v_bow(e1) & with(x1,x2) & n_head(x2) & of(x2,x1) & n_thing(x1) & n_people(x1))
exists p1 x1 x2 x3.(n_ocean(x3) & n_bottom(x2) & n_thing(x1) & at(x1,x2) & of(x2,x3))