A group of people are on a stone street and waving up at the camera.
The group is waving to their friends.
The group could be waving to anyone, not just waving to their friends.
exists p1 x1 x2 x7.(n_camera(x7) & exists e1 s1 x3 x4 x5 x6.(on(x1,x3) & subset_of(e1,x3) & a_up(s1) & Manner(e1,s1) & at(e1,x7) & Actor(e1,x6) & v_wave(e1) & n_thing(x6) & subset_of(x4,x3) & n_street(x4) & of(x4,x5) & n_stone(x5)) & of(x1,x2) & n_people(x2) & n_group(x1))
exists e1 x1 x2.(n_friend(x2) & of(x2,x1) & n_thing(x1) & n_group(x1) & to(e1,x2) & Actor(e1,x1) & v_wave(e1))