People racing on ATV's in full protective garb
The people in ATV's are all men.
All people racing in ATV's are not all men.
exists e1 s1 s2 x1 x2 x3 x4 x5.(a_topic(x1) & in(e1,x5) & n_garb(x5) & a_protective(s2) & Theme(s2,x5) & a_full(s1) & Theme(s1,x5) & on(e1,x3) & n_'s(x3) & (x3 = x4) & ne_org_atv(x4) & Actor(e1,x2) & v_race(e1) & (x1 = x2) & n_people(x1))
exists p1 x1 x2 x3.(n_people(x1) & all x4.(n_man(x4) -> (x1 = x4)) & in(x1,x2) & n_'s(x2) & (x2 = x3) & ne_org_atv(x3))