A security officer uses her radio.
A radio is used by a female security officer
If the officer uses her radio, she is female, as her implies female.
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_use(e1) & n_radio(x3) & of(x3,x1) & n_female(x1) & n_officer(x1) & of(x1,x2) & n_security(x2))
exists e1 s1 x1 x2 x3.(Actor(e1,x2) & n_officer(x2) & of(x2,x3) & n_security(x3) & a_female(s1) & Theme(s1,x2) & Theme(e1,x1) & v_use(e1) & n_radio(x1))