A man wearing a green shirt and an orange safety hat works on mechanical equipment inside a fenced area, while a group of people walk on a lawn behind him.
The people are outside.
The people are outside refers to  man wearing a green shirt while a group of people walk on a lawn behind him.
exists e1 e3 e2 s1 s2 s3 x1 x2 x3 x4 x5 x6 x7 x8 x9 x10 x11 x12 x13.(while(e2,x10) & of(x10,x11) & on(e3,x13) & behind(x13,x2) & n_male(x2) & n_lawn(x13) & Theme(e3,x12) & v_walk(e3) & (x11 = x12) & n_people(x11) & n_group(x10) & on(e2,x8) & inside(x8,x9) & n_area(x9) & a_fenced(s3) & Theme(s3,x9) & n_equipment(x8) & a_mechanical(s2) & Theme(s2,x8) & Actor(e2,x1) & v_work(e2) & subset_of(x5,x1) & n_hat(x5) & of(x5,x7) & n_safety(x7) & of(x5,x6) & n_orange(x6) & subset_of(x2,x1) & Theme(e1,x4) & Actor(e1,x3) & v_wear(e1) & n_shirt(x4) & a_green(s1) & Theme(s1,x4) & (x2 = x3) & n_man(x2))
exists s1 x1.(n_people(x1) & Theme(s1,x1) & a_outside(s1))