Four children and a woman are tending sheep in an arid location.
The family works the sheep farm in Australia.
Just because the woman and four children are present together does not imply they are a family. Also, the exact location of the scene is not mentioned at all in the first sentence.
exists e1 s1 x1 x2 x3 x4 x5.(in(e1,x5) & n_location(x5) & a_arid(s1) & Theme(s1,x5) & Theme(e1,x4) & Actor(e1,x1) & v_tend(e1) & n_sheep(x4) & subset_of(x3,x1) & n_woman(x3) & subset_of(x2,x1) & n_child(x2) & card_eq_4(x2))
exists e1 x1 x2 x3 x4.(ne_geo_australia(x4) & n_farm(x2) & of(x2,x3) & n_sheep(x3) & n_family(x1) & Theme(e1,x2) & Actor(e1,x1) & v_work(e1) & in(x2,x4))