Several people are dancing in some sand.
The people are at the beach.
The beach has sand.
exists e1 s1 x1 x2.(in(e1,x2) & n_sand(x2) & Actor(e1,x1) & v_dance(e1) & n_people(x1) & a_several(s1) & Theme(s1,x1))
exists p1 x1 x2.(n_beach(x2) & n_people(x1) & at(x1,x2))