A security officer uses her radio.
A security officer calls in a fight at a concert.
The security officer did use her phone but in sentence 1 there is no mention that she called in a fight at a concert.
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 x1 x2 x3 x4.(in(e1,x3) & at(x3,x4) & n_concert(x4) & n_fight(x3) & Actor(e1,x1) & v_call(e1) & n_officer(x1) & of(x1,x2) & n_security(x2))