There are several people watching a person in the air with skies surrounded by mountains and snow.
A group of people watch a guy skydiving.
Just because there is a man in the air it does not necessarily mean he is skydiving.
exists p1 x1 x5.(n_air(x5) & exists e1 e2 s1 x2 x3 x4 x6 x7 x8 x9 x10.((x1 = x2) & with(e1,x6) & Actor(e2,x8) & n_snow(x10) & n_mountain(x9) & subset_of(x10,x8) & subset_of(x9,x8) & Theme(e2,x7) & v_surround(e2) & (x6 = x7) & n_sky(x6) & in(e1,x5) & Theme(e1,x4) & Actor(e1,x3) & v_watch(e1) & n_person(x4) & (x2 = x3) & n_people(x2) & a_several(s1) & Theme(s1,x2)))
exists e1 e2 x1 x2 x3 x4.(Theme(e2,x3) & Actor(e2,x1) & v_watch(e2) & Actor(e1,x4) & v_skydive(e1) & (x3 = x4) & n_guy(x3) & of(x1,x2) & n_people(x2) & n_group(x1))