An athlete is laying on a field while two people help him.
A person is on a field and two other people are present.
An athelete is a person, and "people are present" is a less specific rephrasing of "while two people help him."
exists e1 p1 x1 x2.(exists e2 x3.(Theme(e2,x1) & Actor(e2,x3) & v_help(e2) & n_people(x3) & card_eq_2(x3)) & n_male(x1) & while(e1,p1) & on(e1,x2) & n_field(x2) & Actor(e1,x1) & v_lay(e1) & n_athlete(x1))
exists p1 s1 x1 x2 x3.(n_people(x3) & Theme(s1,x2) & a_present(s1) & -(x2 = x3) & n_people(x2) & card_eq_2(x2) & exists x4.(on(x1,x4) & n_field(x4)) & n_person(x1))