Two men in fatigues and 9 people in civilian clothes all do push ups on mats in a flat grassy area.
The two men are in the marines.
You can not infer they are in the marines.
exists e1 s1 s2 s3 s4 x1 x2 x3 x4 x5 x6 x7 x8.(a_all(s4) & Manner(e1,s4) & in(e1,x8) & n_area(x8) & a_grassy(s3) & Theme(s3,x8) & a_flat(s2) & Theme(s2,x8) & on(e1,x7) & n_mat(x7) & Theme(e1,x6) & Actor(e1,x1) & v_push(e1) & n_up(x6) & in(x1,x2) & subset_of(x4,x2) & in(x4,x5) & n_clothes(x5) & a_civilian(s1) & Theme(s1,x5) & n_people(x4) & n_date(x4) & a_date_day_09(x4) & a_date_day_09(x4) & subset_of(x3,x2) & n_fatigue(x3) & n_man(x1) & card_eq_2(x1))
exists p1 x1 x2.(n_marine(x2) & n_man(x1) & card_eq_2(x1) & in(x1,x2))