Martial arts students practice outside building.
The martial arts students were all female.
We don't know that the all the students are female.
exists e1 p1 x1 x2.(ne_nam_martial(x1) & exists e2 s1 x3.(Theme(e2,x3) & Actor(e2,x2) & v_practice(e2) & n_building(x3) & a_outside(s1) & Theme(s1,x3)) & Recipient(e1,p1) & Actor(e1,x1) & Topic(e1,x2) & v_art(e1) & n_student(x2))
exists p1 s1 x1 x2.(n_student(x1) & of(x1,x2) & n_art(x2) & a_martial(s1) & Theme(s1,x1) & all x3.(n_female(x3) -> (x1 = x3)))