A group of people on a lawn, one of whom is filming something with a camera.
There is a group of people on the lawn.
Both sentence are talking about group of people.
exists e1 x1 x2 x3 x4 x5 x6 x7.(with(e1,x7) & n_camera(x7) & Theme(e1,x6) & Actor(e1,x1) & v_film(e1) & n_thing(x6) & on(x1,x3) & rel(x3,x4) & of(x4,x5) & n_whom(x5) & n_thing(x4) & card_eq_1(x4) & n_lawn(x3) & of(x1,x2) & n_people(x2) & n_group(x1))
exists p1 x1 x4.(n_lawn(x4) & exists x2 x3.((x1 = x2) & on(x2,x4) & of(x2,x3) & n_people(x3) & n_group(x2)))