A group of people jumping into the air at the beach.
The group of people are playing beach volleyball.
Just because people are jumping doesn't mean that they are playing volleyball.
exists e1 x1 x2 x3 x4 x5.(n_beach(x5) & n_air(x4) & a_topic(x1) & of(x1,x2) & at(e1,x5) & into(e1,x4) & Actor(e1,x3) & v_jump(e1) & (x2 = x3) & n_people(x2) & n_group(x1))
exists e1 x1 x2 x3 x4.(n_group(x1) & Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & n_volleyball(x3) & of(x3,x4) & n_beach(x4) & of(x1,x2) & n_people(x2))