Many people are at a shallow blue beach.
The people are throwing rocks into the water.
Standing near shallow beach people are not needed to be throwing rocks
exists p1 x1.(exists s1 s2 x2.(at(x1,x2) & n_beach(x2) & a_blue(s2) & Theme(s2,x2) & a_shallow(s1) & Theme(s1,x2)) & n_people(x1) & n_quantity(x1))
exists e1 x1 x2 x3.(n_water(x3) & n_people(x1) & into(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_throw(e1) & n_rock(x2))